How to plot the coastline on a map ?

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Vidz
Vidz 2019-7-26
评论： Carlo Grillenzoni 2023-8-14
Hi,
I am trying to plot tasmania coastline on a map. I am trying to plot variable ctt with lonxlat in southern hemisphere.
I have been doing this:
pcolor(lon, lat, ctt);hold on
shading flat
load coastlines
axesm('eqaconic','MapLatLimit',[-57 -43],'MapLonLimit',[130 160])
plotm(coastlat,coastlon)
However, this is not working. I want to show the coastline with map on top.
Thanks.

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回答（1 个）

MathWorks Support Team
To plot the coastlines, the map needs to be created first. This can be done by calling axesm first, and then plotting using pcolorm and geoshow:
load coastlines
axesm("eqaconic","MapLatLimit",[-57 -43],"MapLonLimit",[130 160])
pcolorm(lat,lon,ctt)
geoshow(coastlat,coastlon)
Alternatively, the array ‘ctt’ can be plotted using geoshow instead of pcolorm:
geoshow(lat,lon,ctt,"DisplayType","surface")
  1 个评论
Carlo Grillenzoni
Carlo Grillenzoni 2023-8-14
ok, is it possible to improve the spatial resolution of the Coastlines data base ?

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