Charley Harper Quilt Finished

For the last year and a half, I’ve been working on a needle-turn applique quilt with blocks based on the work of Charley Harper.  It was completely hand-pieced and hand-quilted.  I also made my own patterns for each block.  Note that Charley Harper Studio sells quilt and needlepoint patterns on their site, but I did not use these.  I started planning and designing in June 2016 and finished it in the middle of November 2017.  I thought it would take a year to finish, but I’d never done anything like this before so I’m not surprised that my estimate was off.  What matters though is that I loved making this and that I finished.

IMG_4142_cropped

My finished quilt

Since this was a major undertaking, I feel compelled to discuss the process I went through and offer some tips if you decide to try this too.

Designing the Blocks

I discussed my process for creating the patterns in previous blog posts (over-all design and individual blocks), so check those out for details.  Mostly I would encourage you to keep your designs simple.  Small pieces of fabric are very difficult to work with and at some point, it makes sense to complete some details with embroidery rather than applique.

Choosing fabric was mostly straight-forward since the colors tend to be solid in the reference work.  Sometimes though, a piece had a textured or patterned background, like the calico cat on a leaf background.  This was not easy to replicate, so I chose a fabric that was a mottled green and quilted leaf shapes onto the background to have a similar feel to the original.

Cat_PatternPieces

One page of one of my patterns. Writing the color, number of times to cut out a shape, and the approximate location or item is helpful (nose, eye, leg, etc.).

RaccoonEmbroidery

Embroidery is best for small fields or lines. I ditched the hoop after this block and just held the fabric in my hands. Do what makes you happy.

Cutting & Piecing

A lot of my learning from high school geometry came in handy here.  Finding the center of a block is easily achieved by folding the fabric in half.  A square (a ruler with a right angle) is useful for making sure corners are square and measurements are made at 90° angles.

Do yourself a huge favor and cut your background fabric larger than you need it.  There will be shrinkage as you applique and you’ll be much happier to have extra than not enough.

HummingBirdPiecing

Referring to the original image helps with placement an over-all feel.

In general, be patient.  Take the time to plan the order you need to add each piece.  Sometimes I needed to applique smaller pieces to larger ones before they got sewn down to the background fabric.  Did I have to rip things out occasionally?  Oh yes!  I even mangled up a few pieces of fabric so bad I had to cut new ones.  Not a big deal.  Be patient with yourself.

CatPiecing

Laying out pieces can help you know what to sew down next. It’s ok if you need to undo something though.

PloverTracing

Don’t be afraid to cut apart your pattern to help with alignment of pieces or embroidery lines.

Piecing the Blocks Together

After all that applique, your blocks will rarely still be square.  Yikes!  What matters is that you get a straight seam when you put them together.  Don’t worry if you’re having to get creative to make it work.  In the end, no one’s gonna know.

Quilting

By the time I got to quilting, I realized that I should follow the warnings online to make sure your batting and backing are bigger than the top to account for shrinkage as you quilt.  Such a good idea!

Pinning also is helpful when you first start to keep everything together.  However!  Before you start to quilt a section, take out the pins and make sure everything is lying flat before you re-pin.  Also, start your quilting in the center and work out to prevent uneven backing fabric.

I’ll tell you a secret: my backing isn’t quite flat.  I had some moments of serious disappointment over this, but I realized that NO ONE CARES what the back of the quilt looks like.  It’s also hand-made so there will be some hiccups.  It doesn’t ruin anything.  Obviously you don’t want huge puckers, but a couple of wrinkles or loose spots is not the end of the world.  Mistakes on the back are less important than issues on the front.

OwlQuilting

Designing the background quilting was a big challenge.  I had images of the original art to inform my block decisions, but the needs of the quilting sometimes didn’t fit.  For example, I needed to have fairly evenly spaced quilting and not leave large areas un-quilted.  But quilting added new lines that weren’t in the originals.  In the burrowing owl block, I decided to add in parallel lines that corresponded with the lines on the owls’ heads.  I’ve seen similar striping in other pieces from Charley Harper.  For the dolphin block, I added more swooshes to fill in un-quilted areas.  My goal was to provide stability to the block in a way that was visually similar to methods employed by the original artist.

Binding

I broke some more rules with the binding.  After I quilted around the major figures in my blocks and the framing pieces and nothing was shifting around any more, I did my binding, then I finished off the background quilting.  The batting and fabric on the edges was starting to stretch out and get in the way and it just made sense to handle the batting at that time.

Overall

Just have fun.  Try not to sweat the small stuff.  If there’s a mistake and you’re prone to worry about these things, ask yourself, “Will my friends and family notice this?  If they did would they care?” or “In 5 years am I ever going to notice this when I use my quilt?”  If not, let it go.  The things that matter are issues that will affect the over-all life of the project like skimpy seams, frayed edges, or poor quality stitching.  The rest is fine.

Break the rules.  Ignore the videos and blog posts that tell you you’re doing it wrong.  If the end result is what you want, it doesn’t matter how you got there.  I never was able to turn my applique edges under with the needle.  When I tried, I got a frayed mess.  I used my fingers with much better success.  Can you tell the difference?  Nope.  Use the videos and blog posts to get an idea of how to do things, but don’t worry if your version is a little different.

Share your progress.  I planned to post about each block here on my blog, but ended up sharing mostly on Facebook in a public album.  My friends and family enjoyed following the progress.  Yours probably will too.

Above all, just try and do what makes YOU happy.

Me&Caddy

Me and my quality control agent, Cadmius, who inspected every stitch that went into this project. (There is a significant amount of cat hair inside this quilt.) His favorite blocks are the dolphin, the owls, and the possums. I can tell because he’ll only sit on those three.

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Change SP Object Polygon Rendering Order in R

The Problem

I have a geoJSON file that was made by combining many (as in ~250) geoJSON files each containing a single polygon in R.  The polygons are of varying size and can overlap in space.  When I open the file in a GIS, often the smaller polygons are hidden under the larger ones, making displaying the data challenging, if not impossible.

Map showing few polygons when there should be many

I know there are more polygons than are visible in this area, so they must be hiding under the larger polygons.

Map showing larger polygons obscuring smaller polygons

With transparency set to 60% for each polygon (see the Draw Effects dialog in QGIS for the fill symbol layer), you can see that smaller polygons are hiding under larger ones.

The Goal

I would prefer that the polygons stack up so that the largest is on the bottom and the smallest is on the top.  This requires that I change the rendering order based on the area of each polygon.

The Quick Fix

QGIS has an option to control the rendering order.  Open the Layer Properties; go to the Style tab; check the box for “Control feature rendering order”; click the button on the right with the A Z and an arrow to enter the expression you want (I would order by area for example).

Why isn’t this the right solution for me?  I’m sharing a user-contributed dataset.  One of the goals is that anyone can use it.  When polygons are obscured, it makes the dataset just a little harder to use and understand, which means people won’t like using it.  Another goal is that anyone with a reasonable understanding of GIS can contribute.  If I have to write a bunch of instructions on how to visualize the data before they can add to the dataset, people are less likely to contribute.

Map showing all the polygons expected.

Now I can see all of the polygons because the larger ones are on the bottom and the smaller ones are on top.

My Solution

Hat tip to Alex Mandel and Ani Ghosh for spending a couple of hours with me hammering out a solution.  We used R because I already had a script that takes all of the polygons made by contributors and combines them into one file.  It made sense in this case to add a few lines to this post-processing code to re-order the polygons before sending the results to the GitHub repository.

What you need to know about rendering order & SP Objects

The order in which items in an SP object are rendered is controlled by the object’s ID value.  The ID value is hidden in the ID slot nested inside the polygons slot.  If you change these values, you change the order items are rendered.  ID = 1 goes first, ID =2 goes on top of 1, 3 goes on top of 2, and so on.  So for my case, assigning the IDs based on the area will get me the solution.

How

This Stack Exchange Post on re-ording spatial data was a big help in the process.  Note that every SP object should have the slots and general structure I used here.  There’s nothing special about this dataset.  If you’d like the dataset and another copy of the R code, however, it is in the UC Davis Library’s AVA repository.

#load the libraries you'll need
library(raster)
library(geojsonio)
library(rgdal)

### FIRST: Some context about how I made my dataset in the first place

# search in my working directory for the files inside the folders 
# called "avas" and "tbd"
avas <- list.files(path="./avas", pattern = "*json$", full.names = "TRUE")
tbd <- list.files(path="./tbd", pattern = "*json$", full.names = "TRUE")

#put the two lists into one list
gj <- c(avas, tbd)

#read all the geojson files & create an SP object
vects <- lapply(gj, geojson_read, what="sp")

#combine all the vectors together. bind() is from the raster package.
#probably could just rbind geojson lists too, but thats harder to plot
all <- do.call(bind, vects)

#Change any "N/A" data to nulls
all@data[all@data=="N/A"]<- NA


### SECOND: How I did the sorting

#Calculate area of polygons - needed for sorting purposes
# the function returns the value in the area slot of each row
all@data$area<-sapply(slot(all, "polygons"), function(i){slot(i, "area")})

#add the row names in a column - needed for sorting purposes
all$rows<-row.names(all)

#Order by area - row names & area are needed here
# decreasing = TRUE means we list the large polygons first
all<-all[match(all[order(all$area, decreasing = TRUE),]$rows, row.names(all@data)),]

#add new ID column - essentially you are numbering the rows 
# from 1 to the number of rows you have but in the order of 
# largest to smallest area
all$newid<-1:nrow(all)

#assign the new id to the ID field of each polygon
for (i in 1:nrow(all@data)){
 all@polygons[[i]]@ID<-as.character(all$newid[i])}

#drop the 3 columns we added for sorting purposes (optional)
all@data<-all@data[,1:(ncol(all@data)-3)]

#write the data to a file in my working directory
geojson_write(all, file="avas.geojson", overwrite=TRUE, convert_wgs84 = TRUE)

How to make a PostGIS TIGER Geocoder in Less than 5 Days

GeocoderWorking

It doesn’t look like much, but this image represents success!

I have been through 5 days of frustration wading through tutorials for how to make a Tiger geocoder in PostGIS.  My complaints, in a nutshell, are that every tutorial is either non-linear or assumes you already know what you’re doing… or both.  If I knew what I was doing, I wouldn’t need a tutorial.  And your notes on how you made it work are lovely, if only I could figure out what part of the process they pertain to.  Enough griping.  Here’s how I finally got this thing to work.

Note: I’m on Windows 10, PostGRESql 10, PostGIS 2.4.0 bundle.  This tutorial draws from many existing tutorials including postgis.net and this one with additional help from Alex Mandel.

What is a Tiger Geocoder?

Let’s start by breaking this down.  A geocoder is a tool composed of a set of reference data that you can use to estimate a geographic coordinate for any given address.  Tiger, in this case, does not refer to a large endangered cat, but rather the US Census’ TIGER spatial files.  This is the reference data we will use.  The process we’re about to embark on should make assembling this data easy by using tools that will help us download the data and put it into a PostGIS database.

Install Software & Prep Folders

You will need to install:

  1. postgreSQL 10 – the database program that’s going to make all of this work
    1. The installer should walk you through installation options.  Write down the port (keeping the default is fine) and password you choose.  Pick a password you like to type because it comes up a lot.
  2. PostGIS 2.4.x bundle – PostGIS makes postgreSQL have spatial capabilities (much like a super power) and install the bundle option because it comes with things you’ll need, saving a few steps
    1. Make sure you’ve installed PostGRESql first
    2. The installer should walk you through the installation options.
  3. wget 1.19.1 (or a relatively recent version) – this is a tool that the geocoder scripts will need to download files from the census
    1. Save the .zip option to your computer.
    2. Unzip it in your C:/ drive so it’s easy to access later.  Remember where you put it because you’ll need the path later.
  4. 7zip – this is an open source file unzipping tool that the scripts will use to unzip the files they download from the Census website.

You will need to create a folder on your computer to be your “staging folder”.  This is where the scripts we’ll run later will save the files they need to download.

  1. Make a folder called “gisdata” in a place where you have write permissions and can find it later.  For example: C:\gisdata
  2. Inside your gisdata folder, make another folder called “temp”. For example: C:\gisdata\temp

Make a Database

We need to make an empty database to put our files into.

Open PGAdmin 4.  This is the graphical user interface for postgreSQL that should have installed with the postgreSQL files.

If PGAdmin 4 doesn’t start or gives an error, you may need to start the service that makes it run.  In the Windows search bar, search “services”.  In the Services window, right click postgresql-x64-10 and choose “start”.

In the browser panel on the left side of the pgAdmin 4 window, click the + to expand Servers and PostgreSQL 10.  When it asks for your password, give it the password you wrote down during the installation process.

Right click on PostgreSQL 10 -> Create -> Database

In the Database name field, give it a name with lowercase letters.  I named mine geocoder.  Leave the owner drop-down on postgres.  Click Save.

Expand the Databases entry in the Browser panel to see your new database in the list.

Enable Extensions

Right now, our database is just a regular database without spatial functions.  We need to enable the PostGIS extension and the extensions that help us geocode.

Open the Query Tool: in the Tools menu at the top of the screen, select “Query Tool”.  The top section of the query tool is where you type SQL commands.  Underneath this is where the results of your queries are displayed.

Enable the PostGIS extension to give the database spatial capabilities by copying and pasting this code into the query tool and clicking the run button (it looks like a lightning bolt… why?  I don’t know.):

CREATE EXTENSION postgis;

The next three lines enable extensions that help with the geocoding process (run them one at a time):

CREATE EXTENSION fuzzystrmatch;
CREATE EXTENSION postgis_tiger_geocoder;
CREATE EXTENSION address_standardizer;

Let’s make sure the extensions loaded correctly. This line of code should take the address (in between the parentheses and single quotes) and break it down into it’s components (create a “normalized address”):

SELECT na.address, na.streetname,na.streettypeabbrev, na.zip
	FROM normalize_address('1 Devonshire Place, Boston, MA 02109') AS na;

The output should look something like this:

 address | streetname | streettypeabbrev |  zip
---------+------------+------------------+-------
       1 | Devonshire | Pl               | 02109

Edit the loader tables

The scripts we’re going to run (in a few steps from now) will need some information to run correctly.  The place they look for this information is a set of two tables that have been added to your database by the extensions we just enabled.

In the browser panel (on the left side of the window), expand your geocoder database, then the schemas list, the tiger list, and finally the Tables list.  Make sure you’re looking at the tables list inside of the the tiger list… each schema gets to have it’s own list of tables.

Right click on the loader_platform table, and select “View/Edit Data”, and then “All Rows”.  Now we can edit one of the entries to tell the scripts where to look for certain files and folders.

One row of the table has “windows” in the os (operating system) column.  In that row, double click the cell in the declare_sect column to open up a window that will let you edit the text.  For each line, you’ll need to make sure you type the path to the folder or file needed.  This is what mine looks like after editing:

set TMPDIR=C:\gisdata\temp
set UNZIPTOOL="C:\Program Files\7-Zip\7z.exe"
set WGETTOOL="C:\wget-1.19.1-win64\wget.exe"
set PGBIN=C:\Program Files\PostgreSQL\10\bin\
set PGPORT=5432
set PGHOST=localhost
set PGUSER=postgres
set PGPASSWORD=Password123
set PGDATABASE=geocoder
set PSQL="C:\Program Files\PostgreSQL\10\bin\psql.exe"
set SHP2PGSQL="C:\Program Files\PostgreSQL\10\bin\shp2pgsql.exe"
cd C:\gisdata

(No, that’s not my actual password.)  Note that some of the paths might be correct and others will not be, so check them all.  When you’re done, click Save and then close the table with the x button in the upper right corner (side note: I find the pgAdmin 4 interface to be rather unintuitive).  If it asks you to save your table, tell it yes.

Now open the loader_variables table.  Change the staging_folder to your chosen staging folder.  I hard-coded mine into the last table because it the scripts didn’t seem to be recognizing entries in this table, but change it anyway just to be sure.  Again, save and exit.

Make & Run the Scripts

Add postgreSQL path to Windows

Before we can use postgreSQL in the command line (sorry to spring that on you… deep breaths… we’ll work through this together), we need to make sure Windows knows about postgreSQL.

For Windows 7, this Stack Overflow post should help.  For Windows 8 and 10, try this one.

Make the Nation Scripts

Next, we are going to run a line of code that will automatically generate a script.  We’ll run that script to automatically download data from the Census and place it into your database.  (Yes, we are going to run code that makes bigger code that downloads data.)

Open a command line terminal (on Windows, search “cmd” in the search box and select the Command Prompt).  Copy and paste this line of code into your terminal window, changing the path to your staging folder (but keep the file name at the end), then hit enter to run the code:

psql -U postgres -c "SELECT Loader_Generate_Nation_Script('windows')" -d geocoder -tA > C:/gisdata/nation_script_load.bat

(Quick note about what this code does… “-U postgres” tells the command that the user name for the database we want to work with is “postgres”. “-d geocoder” tells it that the name of the database to use is “geocoder”. “SELECT Loader_Generate_Nation_Script” is a function that postGIS can use to make the script we’re going to need. The ‘windows’ argument actually tells it to read the line in the loader_platform table we edited earlier.)

The terminal will probably return this line:

Password for user postgres:

Type in your password, although it won’t show anything on the screen as you type, and hit enter.  A new prompt (the path for the folder you’re in and a >) will appear when it’s finished.  Your staging folder should now have a files called nation_script_load.bat  This new file is a batch file containing a series of commands for the computer to run that will download files from the Census’ website, unzip them, and add them to your database automatically.

Run the Nation Script

Running your new batch script in Windows, this is fairly straight forward (seriously, one step had to be, right?).

First, if you’re not already in the directory for your staging folder, change directories by running this command in the command line (How do you tell?  The command prompt shows the directory you’re in):

cd C:/gisdata

Now your command prompt should say C:/gisdata >

To run the script, in the command line, type

nation_script_load.bat

and hit enter to run your .bat file.  You will see a series of code run across your terminal window and it may open a 7zip dialog as it unzips files.  This could take a little while.

When it’s done, you should have a tiger_data schema with tables called county_all and state_all.  You can check to make sure the tables have data by running these lines in the pgAdmin 4 Query Tool:

Check the county_all Table:

SELECT count(*) FROM tiger_data.county_all;

Expected Results:

count
-------
 3233
(1 row)

Check the state_all table:

SELECT count(*) FROM tiger_data.state_all;

Expected Results:

 count
-------
 56
(1 row)

Make & Run the State Script

The process of making and running the state script are very similar to what we just did for the national script.  This script makes the tables for a state (or multiple states) that you specify.

In the command line, run this code to generate the scripts for California:

psql -U postgres -c "SELECT Loader_Generate_Script(ARRAY['CA'], 'windows')" -d geocoder -tA > C:/gisdata/ca_script_load.bat

Note that if you want additional states, add them to the bracketed list separated by commas.  For example, to download California and Nevada, you would run:

psql -U postgres -c "SELECT Loader_Generate_Script(ARRAY['CA', 'NV'], 'windows')" -d geocoder -tA > C:/gisdata/ca_nv_script_load.bat

Change directories back to your staging folder if needed by running this command in the command line:

cd C:/gisdata

Run the script by entering the name of the file into the command prompt:

ca_script_load.bat

The state script is going to take a while to load. It downloads many, many files. So go get a cup of coffee/tea/hot chocolate and a cookie while you wait.

Finally, we need to do some analyze all of the tiger data and update the stats for each table (reference). In the pgAdmin 4 query builder, run each of these lines separately:

SELECT install_missing_indexes();
vacuum analyze verbose tiger.addr;
vacuum analyze verbose tiger.edges;
vacuum analyze verbose tiger.faces;
vacuum analyze verbose tiger.featnames;
vacuum analyze verbose tiger.place;
vacuum analyze verbose tiger.cousub;
vacuum analyze verbose tiger.county;
vacuum analyze verbose tiger.state;
vacuum analyze verbose tiger.zip_lookup_base;
vacuum analyze verbose tiger.zip_state;
vacuum analyze verbose tiger.zip_state_loc;

Try it out

I know, it doesn’t seem like we’ve got a lot to show for all that work.  If you look in the tables for your Tiger schemas, you might notice that there’s more of them, but let’s get some concrete results.

Run this code in the pgAdmin 4 Query Builder to return a coordinate for an address in WKT (well known text).  Change the address to one in the state you’ve downloaded.  (More testing option here.)

SELECT g.rating, ST_AsText(ST_SnapToGrid(g.geomout,0.00001)) As wktlonlat,
(addy).address As stno, (addy).streetname As street,
(addy).streettypeabbrev As styp, (addy).location As city, (addy).stateabbrev As st,(addy).zip
FROM geocode('424 3rd St, Davis, CA 95616',1) As g;

It should return:

rating |          wktlonlat          | stno | street | styp | city    | st   | zip
0      | 'POINT(-121.74334 38.5441)' | 424  | '3rd'  | 'St' | 'Davis' | 'CA' | '95616'

(That’s the address for the Davis, CA downtown post office, in case you were wondering.)

You Did It!

You did it! I sincerely hope that at this point you have a geocoder that’s ready to use. Next up, I need to figure out how to geocode a bunch of addresses. More on that soon!

 

 


Growing Cyclamen from Seed

The Backstory

A couple of years ago I bought a cyclamen.  I was having a bunch of people over for Thanksgiving and the patio off the dining room looked like death.  The large volume of red flowers on the Cyclamens at the hardware store was an easy fix.  I’ve heard they are hard to grow and that they usually die after the winter, but I was willing to give it a try.  My new plant went into a large pot visible from the back door in a fairly shady spot.  In the spring, as the flowers died back, I noticed that a couple of them had made seed pods.  Being a plant person, I couldn’t just leave them.  This was an opportunity! So I did a bunch of research online on how to start them from seed.

How NOT to Do It

It’s very difficult, according to the internet, to grow a Cyclamen from seed.  You need cold, and darkness, and it takes a very long time.  I did my best to provide the prescribed conditions, and hoping that since Cyclamens come from a Mediterranean climate like my own, any mistakes would be mitigated.  I was delighted to get 5 sprouts!  I was so careful with them, but only one survived.  I thought perhaps the internet was right and this WAS hard.  It didn’t help that the clamshell plastic container that I used (because the internet said I needed a lid) was shallow and prone to drying out.

IMG_4125

My one surviving plant from my first try. It’s grown a second leaf which makes me very happy.

The Epiphany

I consoled myself with the fact that I could buy more of these festive winter flowerers and the next winter bought myself a cheerful pink and white one.  Like the one before it (which is still going strong, unlike what the internet predicted), it did very well. Both plants had masses of flowers and ended up making heaps of seeds.  I collected them and decided to give it another try.  The seeds I collected were waiting inside for the weather to get cold.  After all, the internet says 104 degree days are not the time to grow a Cyclamen.  Around September, I was examining plant #2 for new leaves.  This summer’s heat hit it hard but it was coming back.  I noticed some small leaves that didn’t look like the big curled new growth on the plant I bought.  They looked like the sprouts I got last year!

IMG_4121

Three of the 5 sprouts that grew themselves in the pot with their mother plant.

You’re kidding me.  All they need is the conditions around their mother plant.  I transplanted the sprouts to their own pot.  A windstorm killed one, but the rest are going strong.

IMG_4130

My cyclamen collection… and a mass of oxallis in the big pot.

Success

I grabbed a glazed pot, filled it with quality potting soil, and sprinkled on some seeds.  The established plants had a layer of leaf litter from the last year’s spent leaves that seemed to provide good protection from the sun and hold in moisture, so I covered the pot with some spent Cyclamen and Oxallis leaves because that’s what I had on hand.

IMG_4129

Leaf litter covering freshly planted seeds.

It took several weeks but I started to see the seeds swell and form small bulbs.

IMG_4123

There! Right in the middle of the photo! It’s a tiny cyclamen bulb.

I knew I had the formula right when I saw that I had a leaf climbing out from the leaf mulch.

IMG_4115

Yes, that’s a leaf, although it kind of looks more like a mung bean sprout…

The key really seems to be keeping them moist.  I let my pots sit in a shallow pool of water so they can wick up what they need.

IMG_4119

Sprouts in progress. In the square pots are attempt #1 and the volunteers. The larger yellow round pot has attempt #2. The small round pots have the last of the seeds planted today.

I’m crossing my fingers that they keep growing.  The second leaf appearing on my plant from attempt #1 is encouraging.  I’m really curious to find out what color flowers they have.  All their leaves are different from their parent plants, so I really can’t say what color flowers I’ll get, if they decide to flower at all.  I imagine I have at least another year, maybe two, to wait.

So the Internet is Wrong…

I guess you can’t trust all the garden know-how posted on the internet.  Here’s a recap of things I’ve learned:

  • Cyclamens aren’t hard to grow, but they do need the right conditions.  Direct summer sun will nuke their leaves, but they can recover. Bright shade seems to be best.
  • Don’t keep them indoors either.  They aren’t house plants.
  • They are not difficult to grow from seed, but again, you need the right conditions.
  • Temperature isn’t really an issue.
  • Moisture seems to be key.  Covering the seeds with leaf litter really helps with this and keeps the light off (if that even matters).
  • A deep, glazed or plastic pot will prevent the pot from drying out.
  • Keep some water in the saucer to provide constant moisture to the seedlings.
  • You don’t need to grow them in a dark cold closet.  It sounded insane when I read it but enough sites said it, so I thought it might be true.

A Visual Summary of FOSS4G 2017

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It’s the afternoon of Saturday, August 19th.  I’m sitting near the back of an airplane wondering how I’m going to keep from going stir crazy on this almost 6 hour flight back to California.  As the plane takes off, I’m thinking about the last week at FOSS4G 2017 and images are flashing through my brain.  Ok, I think, once I can take some stuff out of my bag (neatly stowed under the seat in front of me), I’ll doodle for a while.  That should keep me busy for an hour or so.  5 hours later, I’ve almost finished this whole page and it’s just about time to land.

What struck me at the conference was how important the giving and sharing culture of our community is.  The news from Charlottesville and the US President’s response seemed impossible. I caught up with people I hadn’t seen in a year, met people in person that I’d only known on Twitter, and found potential collaborators for a pet project that needs more people.  I also found inspiration in many of the talks and came home wanting to get started on a thousand new things (except that this cold someone shared with me is preventing me from getting too much done yet).  The best experience though was when I got to share my skills with the community.  I taught a workshop (at Harvard!!!) to 20 incredibly skilled people and gave a talk to about 80 – both about cartography.  I hope that what I shared will help them with some aspect of their work.

While I think it’s clear to everyone how the coders contribute, I think we need to do a better job acknowledging the contributions of users.  After hearing a few presenters say they didn’t feel like they belonged because they were “just users”, I started speaking up during the question time telling the speaker how important their role in the community is.  Making every member of our community feel welcome and valued is key to our continued success.

We also need to do a better job with diversity.  The breakdown of attendees neatly avoided discussing race and gender.  A look around the room, probably told you everything you needed to know about those topics though.  How do we fix it?  I’m not sure, but if we keep the discussion going rather than igoring it, we’ll find the solution faster.

So, thank you to everyone who made FOSS4G 2017 possible



My art process:
(pencil: Mirado Black Warrior HB 2) sketch in an image
(pen: Pilot Rolling Ball Precise V7 fine or Pentel Sign Pen ST150 felt tip) ink in the sketch
(pen: Pentel Sign Pen SES15N brush tip) fill in the spaces between the images
Erase pencil


Hiding Laptop Cords with a Serving Tray

Recently I started a new job and with each new job comes a new work space and new equipment.  At my new (to me… 1960s standard university issues Steelcase) desk, I’ve got a sleek new laptop and a heap of cords plugged into a hub that they tell me is called a docking station, which just looks like a heap of cords to me.  It not only looks cluttered, it’s taking up space.  So here’s my solution…

1. Get yourself a serving tray.  Make sure you like the look of the sides and bottom because you’re going to turn it over.  Also, make sure there are handle holes and that the whole edge of the tray is even. Some have handles that stick up and you’re not going to want that.  Finally, make sure it’s deep enough to accommodate the height of your cord mess (I mean docking station).  Mine’s less than an inch tall, so this 2 inch deep tray is great.

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2. Stick your “docking station” (or cord mess) in the middle of that tray and run the wires out of the holes.  I’ve got the mouse and keyboard cords running into the hub from the handle that’s near the center of the desk and the power cords through the handle on the edge of the desk.  The cords that plug into each side of the laptop come out on their respective sides.

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3. Now, turn that tray over and hide that mess underneath the tray.  So much better.  Now I only see small lengths of cords and the computer can sit over the cord jumble.

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Ok, I need to bring more decorations, but now I can put a potted plant on the corner of the tray with the computer and it won’t be in the way.

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Raccsnack: Another Charley Harper Inspired Quilt Block

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I finally finished this next block in my Charley Harper needle turn quilt.  This one took a long time – about 4 months – to finish.  Not only are there a lot of details to sew on, like lots of leaves with embroidery and about 50 sunflower seeds, I was working on this one in the fall months.  Fall’s generally a pretty busy time of year with holidays and then there’s those colds that get passed around and I was in the process of changing jobs, so this block took a back seat to everything.  This one marks the halfway point in terms of the number of blocks, but in terms of area, I’m more than half way because I’ve finished two of the biggest blocks.

As I’m working, I’m constantly reminding myself that the goal of this project is not exact replication of the original art but to capture it’s essence, it’s playful, delightful shapes. I had to let go of a lot of details.  If you compare this block to the original work by Charley Harper, you’ll notice that I left out the holes on the leaves.  I may go back at some point and add those, but really, this block has so much detail (and I find small pieces to be really difficult to applique) that I decided for now that I can leave them off.  Another important lesson that I’m still learning is that precision is pretty difficult with needle turn. In spite of my best efforts, some things don’t line up the way Harper’s did.  That’s ok.  I’m pretty sure most people that see this quilt aren’t going to notice.  I only see it because I’ve been working so close to it and having to deal with the implications of some pieces not quite lining up.