Displaying latitude and longitude on grid lines

Question

Anna 2013-8-2

0
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https://ww2.mathworks.cn/matlabcentral/answers/83882-displaying-latitude-and-longitude-on-grid-lines

Hi,

I have an ortho map projection with latitude and longitude grid lines and I want to display the degrees of latitude and longitude on the x and y axes. I have tried using axesm but it just alters the range of the axes which I don't want to change.

Here is my coding:

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load coast

figure;

axesm('MapProjection','ortho','origin',[-20,-75])

framem

plotm(lat,long,'k')

gridm

[gLat,gLon]=meshgrid(-20:-1:20,0:359);

plotm(lat_A,lon_A,'r')

hold on

plotm(lat_B,lon_B,'b')

hold on

plotm(lat_C,lon_C,'g')

xlabel('{\bfLongitude [degrees]}')

ylabel('{\bfLatitude [degrees]}')

title ('{\bfFlight Track}')

----------

Thanks

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Anna 2013-8-3

Can anyone help? I'm sure there's a simple solution, I just can't see it.

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Answer 1

Cedric 2013-8-3

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https://ww2.mathworks.cn/matlabcentral/answers/83882-displaying-latitude-and-longitude-on-grid-lines#answer_93490

编辑：Cedric 2013-8-3

在 MATLAB Online 中打开

If I understand well your question, I would manage to do it using AXESM labeling properties.

Summary at the bottom of http://www.mathworks.com/help/map/controlling-map-frames-and-grids.html#f1-7455

Full description at the bottom of http://www.mathworks.com/help/map/ref/axesm.html

To illustrate, replace your call to AXESM with the following:

 axesm('MapProjection', 'ortho', 'origin', [-20,-75], ...
       'ParallelLabel', 'on', 'PLabelMeridian', -20) ;

Note that it would not make sense to display this information on the x and y axes. See, for example, parallels on your map: they describe curves in the x and y axes, so you can not take a given y and label it e.g. 30°S.