displaying elevation profile using geoshow problem

Question

JJ 2022-3-23

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https://ww2.mathworks.cn/matlabcentral/answers/1678399-displaying-elevation-profile-using-geoshow-problem

回答： VINAYAK LUHA 2023-10-6

lat = [-20 -16] ;

lon = [174 180] ;

worldmap(latlim,lonlim);

load coastlines

geoshow(coastlat,coastlon,'DisplayType','texturemap')

hi, im trying to display elevation profile of lat,lon coordinates above using geoshow, however there is error in code im unsure how to properly use goeshow. Any help would be greatly appreciated

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Answer 1

VINAYAK LUHA 2023-10-6

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https://ww2.mathworks.cn/matlabcentral/answers/1678399-displaying-elevation-profile-using-geoshow-problem#answer_1327799

在 MATLAB Online 中打开

Hi JJ,

I understand that you want to display the elevation profile of a geographical region defined by latitude and longitude ranges using the “geoshow” function.

Follow the below pointers to display the elevation profile using “geoshow” function-

Use the “topo” Digital Elevation Model (DEM) provided by the “MATLAB Mapping Toolbox” to obtain a gridded elevation dataset.
Obtain the “latitude” and “longitude” values using the “meshgrat” function.
Create an axesm-based map for world region using “worldmap” function.
Display map latitude and longitude data on the created axis using “geoshow” function.

Refer to the following code snippet to display the elevation profile using “geoshow” function:

load topo

load coastlines

colormap parula

[lat,lon] = meshgrat(topo,topolegend);

Warning: MESHGRAT will be removed in a future release. Use geographicGrid or NDGRID instead.

latlim = [-20 -16] ;

lonlim = [174 180] ;

imagesc(flip(topo))

worldmap(latlim,lonlim);

geoshow(lat,lon,topo,'DisplayType','texturemap')

hold on