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Description of proposed changes
Wrapping the grdmix function which does "Blending and transforming grids and images". For a GMT example, see https://docs.generic-mapping-tools.org/6.2/gallery/ex52.html
Parameters/Aliases to wrap:
A
alpha/transparency?C
constructD
deconstructE
boundaryG
outgridI
shading/intensity?M
monochromeN
normalizeQ
opaqueR
regionV
verboseW
weightsf
coltypesThe initial implementation here will focus on the construct
-C
and deconstruct-D
methods. Construct involves taking e.g. 3 grids and turning them into 1, whereas deconstruct turns 1 image into 3 separate RGB files (there are a few other possible combinations like 2-band and 4-band inputs but let's not go there yet).In a pure
xarray
world, 'construct' would turn anxarray.DataArray
of shape (3, 180, 360) to (1, 180, 360) suitable for plotting usinggrdimage
. The 'deconstruct option seems less useful in real life, but it does allow us to turn the@earth_day_01d.tif
file into 3 separate files to be 'construct'ed later 🙂First part of addressing #578, closes #370.
Reminders
make format
andmake check
to make sure the code follows the style guide.doc/api/index.rst
.Slash Commands
You can write slash commands (
/command
) in the first line of a comment to performspecific operations. Supported slash commands are:
/format
: automatically format and lint the code/test-gmt-dev
: run full tests on the latest GMT development version