(mapping toolbox) Map axes xdata, ydata and zdata meaning?
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abblah abblah
el 31 de Ag. de 2019
Comentada: abblah abblah
el 5 de Sept. de 2019
Hi,
I am using plot3m to plot the geographical location:
hplot = plot3m(lat,lon,h)
but to update the plot in the map it requires xdata, ydata, zdata
unfortunately there is not any documentation about the coordination of these fields in mapping toolbox?
how can I calculate xdata,ydata and zdata in the following code from lat,lon,h:
set(hplot,'xdata',xdata,'ydata',ydata,'zdata',zdata)
thanks in advance.
abblah
0 comentarios
Respuesta aceptada
Kelly Kearney
el 5 de Sept. de 2019
Editada: Kelly Kearney
el 5 de Sept. de 2019
Map axes apply a geographic transform to convert the geographic coordinates to the projection used by the map axis. You can perform this transform manually using mfwdtran:
ax = worldmap('world');
lat = [0 45];
lon = [0 45];
hln = plotm(lat, lon, '-ro');
% Compare the line's X/YData to manually transformed data
hln.XData
hln.YData
[x,y] = mfwdtran(lat, lon)
% The results you should see...
ans =
0 3.8059e+06
ans =
0 4.7997e+06
x =
0 3.8059e+06
y =
0 4.7997e+06
To go the opposite direction (i.e. convert from projected x/y to lat/lon, use minvtran).
Más respuestas (1)
dpb
el 31 de Ag. de 2019
The map is still an axes underneath the hood so the internal property names are the same. But, the property name is just a name, the data are what are associated with the particular axis direction...just use
set(hplot,'xdata',lat,'ydata',lon,'zdata',h)
2 comentarios
dpb
el 4 de Sept. de 2019
I don't have mapping TB so can't do more than read the doc...
Did you use hold on before trying to add more to the existing plot?
Submit support request to Support if joy doesn't ensue...
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