MATLAB: 3D plot with europe map

3d plotsMapping Toolbox

Hi , I have a question about 3D plot. I want to put the europe map to base of the plot. I mean x-y coordinate will be europe map, and through the z axis, there will be stems on some cities. How i can do this?

Best Answer

Texture map the europe map on to a surface or patch object. "hold on" and stem3() the stems in to place.

Using the texture map is needed because ordinary images cannot rotate out of the z=0 plane.

Related Solutions

MATLAB: Is stem plot not appearing when using “stem3m” with “usamap” or “worldmap”

The issue is that the height of the bars is too small.

According to the documentation of "usamap" (https://www.mathworks.com/help/map/ref/usamap.html):

All axes created with "usamap" are initialized with a spherical Earth model having a radius of 6,371,000 meters.

This means that the scale of the axis is very large. This is also true for "worldmap".

Here are two ways to achieve the desired result:

1) Scale up "ptz" by multiplying by a large number.

For example, multiplying "ptz" by 1,000,000 makes the bars a reasonable height:

ptz = 1e6 * [1 1.5 2 .5 1]';

2) Change the "DataAspectRatio" of the axis.

For example, to achieve the same result as the first method, add the following line of code:

ax.DataAspectRatio = [1 1 1/1e6];

MATLAB: Plotting a line in a worldmap

With PLOTM, you need to define the map axes first like:

load coastlines 
axesm sinusoid;
plotm(coastlat,coastlon);

but GEOSHOW is much easier to use than PLOTM:

worldmap([41 47], [-89 -84]) 
lakes=shaperead('worldlakes','UseGeoCoords',true); 
X_47=(41.709091:0.5:43.127372);
Y_47=(-87.476139:0.5:-86.340273); 
% griddata(42.419908, -86.91495,1); 
load coastlines 
geoshow(coastlat,coastlon); 
hold on; 
h = geoshow(X_47',Y_47');
h.Marker = 'o'; h.Color = 'r';

Best Answer

Related Solutions

MATLAB: Is stem plot not appearing when using “stem3m” with “usamap” or “worldmap”

MATLAB: Plotting a line in a worldmap

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