Add more targets to make it easier to create ISMIP-HOM plots

test/ismip-hom/Makefile

@@ -3,8 +3,15 @@ all: pism ismiphom plot
 pism:
 	mpiexec -n 2 python3 run-ismiphom.py -Mx 101 -My 101 -snes_monitor -ksp_monitor -pc_type mg -pc_mg_levels 2 -stress_balance.blatter.coarsening_factor 4 -mg_coarse_pc_type gamg
 
-ismiphom:
+ismiphom: ismip_all
 	python3 convert-ismiphom.py
 
+tc-2-95-2008-supplement.zip:
+	wget -nc "https://tc.copernicus.org/articles/2/95/2008/tc-2-95-2008-supplement.zip"
+
+ismip_all: tc-2-95-2008-supplement.zip
+	unzip -n $^
+	unzip -n tc-2007-0019-sp2.zip
+
 plot:
 	python3 plot-ismiphom.py

test/ismip-hom/README.rst

@@ -3,16 +3,14 @@
 This directory contains scripts that run ISMIP-HOM_ experiments A-D and plot resulting
 surface ice velocities at y=0.25 (in scaled coordinates).
 
-In short, download and unpack the ISMIP-HOM_ supplement, then run:
+Run
 
 .. code::
 
-   python3 run-ismiphom.py
+   make all
 
-   ln -s path/to/ismip_all .
-
-   python3 convert-ismiphom.py
-   python3 plot-ismiphom.py
+to download and unpack the ISMIP-HOM_ supplement, run PISM, and produce ice velocity
+figures (including the one below).
 
 The script `run-ismiphom.py` uses PISM's Python bindings to run the Blatter solver in
 PISM. See the top of this script for details.