Getting the data
The data is the ETOPO1 dataset from NOAA. It's too big for git, but you can download it from NOAA. I'm using the ice surface, grid registered, 2-byte integer dataset.
The data is also too big for Google App Engine, so it needs to be split into 30MB parts:
split -b 30000000 -d data/etopo1_ice_g_i2.bin data/etopo1_ice_g_i2
then renamed like etopo1_ice_g_i2.bin.XX.
gcloud command doesn't include the App Engine development server, but it's included in the source. If you have the Google Cloud SDK installed in
/opt/google-cloud-sdk, the API can be started with:
python /opt/google-cloud-sdk/platform/google_appengine/dev_appserver.py ./app.yaml