Simon Proud

`gradient_search` producing nan output for some resampling operations

1

In the latest pyresample release the `gradient_search` resampler is returning arrays containing only `np.nan` values for some resampling operations. Previous releases did not do this. In my workflow I'm resampling...

Image produced by `gradient_search` has slightly different extent to `native`

1

When I crop a GOES-16 image and then resample using `gradient_search`, the resulting image appears to be missing pixels on the bottom and right-hand side compared to the `native` resampler....

The gradient search is leaving chunks out of a resampled GOES-16 image, and also appears to only be using one thread. My code: ``` from pyresample import create_area_def from datetime...

Cache not working correctly when resampling MODIS granule

1

#### Code Sample, a minimal, complete, and verifiable piece of code ```python from satpy import Scene scn = Scene([inf], reader='modis_l1b') scn.load(['27', '29', '31', '32', '33'], resolution=1000) scn2 = scn.resample('laea_bb', radius_of_influence=15000,...

Add reader for FY-3E / MERSI-LL

3

This PR adds a reader for the MERSI-LowLight sensor aboard the FengYun-3E satellite. It's currently a draft as there's no additional tests but I aim to add those soon. -...

Fix coordinate names in Ocean Color CCI reader.

1

I mistakenly forgot to set the correct coordinate names in the Ocean Color CCI reader. Satpy expects `x` and `y` but I was using `lon` and `lat`. This PR renames...

Correct the sun azimuth angle range within satpy.

3

At present, the azimuth angles returned for sun and satellite are on different ranges. `satpy.modifiers.angles._get_sun_azimuth_ndarray` returns values in the range `-180. -> 180.` degrees. `satpy.modifiers.angles._get_sensor_angles_ndarray` returns values in the range...

Importing satpy getting slower

11

As satpy becomes more complex, it is importing more and more libraries. This is becoming problematic for us as we're often running tens of thousands of very small python jobs...

Make `_get_sensor_angles` and `_get_sun_angles` public

4

At present, the two functions listed above, which are in `modifiers.angles` are private (hence the leading `_`). I frequently use these functions in my own processing chains and I suspect...

Add reader for FY-4B / GHI data

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This PR adds support for the Geostationary High-speed Imager aboard FengYun-4B. Overall it's quite similar to the existing AGRI reader but has some specific modifications to deal with the geolocation...