Color area outside of polygon/shapefile?

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Ryan 2016-3-9

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回答： Erin Browne 2019-3-19

Hi,

I have a shapefile of the U.S.. I am simply looking to fill the outside of this shapefile with a particular color. I'm sure there is a simple solution but cannot find..

Thank you!

回答（2 个）

Chad Greene 2016-3-9

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Hi Ryan,

Perhaps you're looking for setm with the 'ffacecolor' option.

worldmap('world')
geoshow('landareas.shp')
setm(gca,'ffacecolor',rgb('ocean blue'))

Above I used rgb to get the rgb values of ocean blue.

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Ryan 2016-4-11

Thanks for this Chad! Its a step in the right direction however I noticed that the resolution isn't very good on it. I may have to find another solution.

Chad Greene 2016-4-11

If you have a shapefile, you can simply determine which pixels in your lat/lon grid fall within the bounds of the shapefile's polygon using inpolygon. If your shapefile contains multiple polygons, use Kelly Kearney's inpolygons.

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