How to make a 2-D colormap with coordinates

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andres
andres 2018 年 10 月 22 日
コメント済み: andres 2018 年 10 月 25 日
Hi. I have n points, for each point I have its latitud, longitude and an indicator that take real values (from 0.5 to 2.7). I would like to make a Figure (like a colormap) that shows with colors the value of this indicator for each of these n points. Is that possible? Thanks in advance for any help.

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andres
andres 2018 年 10 月 25 日
Finally it was better to use scatter. Thank you very much anyway!
  3 件のコメント
andres
andres 2018 年 10 月 25 日
That is what I thought. Of course I appreciate the help (and I thanked in the original answer), but if someone has the same question in the future, it is better for him/her to know which solution was the one that worked for me better. Regards!

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jonas
jonas 2018 年 10 月 22 日
編集済み: jonas 2018 年 10 月 22 日
Use a surface object
surf(lon, lat, z)
The data must be gridded, so you may have grid the data like this
[LON,LAT] = meshgrid(min(lon):max(lon), min(lat) :max(lat))
Z = griddata(lon,lat, z, LON, LAT)
surf(LON, LAT, Z)
  2 件のコメント
jonas
jonas 2018 年 10 月 22 日
just set the view,
view([0 90])
or use one of the following functions with the same syntax as surf
  • pcolor
  • imagesc
  • contourf
  • mesh

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