How to covert a geoplot into an mage file in app designer.

I'm designing a application for my project. I have used following code to geoplot a datafile given below. I just want to take screenshot or export the geoplot into an image file.

           latitude = data.Var9;
            longitude = data.Var10; 
            gx = geoaxes(app.GEOGRAPHICALMAPTab); %GEOGRAPHICALMAPTab is a tab used as a geoplot container(where Geoplot is shown)
            geoplot(gx,latitude,longitude,'LineWidth',2,'Color','green');
            text(gx,latitude(1,1),longitude(1,1),'START',"FontName",'Palatino','FontSize',18)
            text(gx,latitude(end,1),longitude(end,1),'END','FontName','Palatino','FontSize',18)
            geobasemap streets
            

I have already used functions like getframe,copyUIAxes etc but none is working. Can anyone please help me ??

[Adam Danz]

Missing info: your matlab release (please fill it in using the Products and Release fields to the right -->)

[Adam Danz]

BTW, copyUIAxes is designed to work with uiaxes while you're using geoaxes. The copyUIAxes function will return an error,

The value of 'uiax' is invalid. copyUIAxes() only copies from UIAxes. You're attemping to copy a matlab.graphics.axis.GeographicAxes object. Use copyobj() to copy objects from other axis types.

[Vishal Tripathi]

u mean like this ??

copyobj(gx);
saveas(gco,'GeoMap.png');

I tries but it's not working I'm getting error like copyobj have not enough input arguments.

and even after putting enough arguments i'm getting an error

Error using saveas

nvalid figure handle.

[Adam Danz]

After you address my first comment, I might be able to make suggestions. Knowing your matlab release will help to suggest the best approach.

To your question above regarding copyobj, what is gx? Have you looked at the documentation for copyobj? If I were copyobj I'd also be telling you that you're missing inputs. I'd be curious about what you're copying (first input) and where you're copying it to (2nd input).

[Vishal Tripathi]

gx and mentioned before is a handle.

gx = geoaxes(app.GEOGRAPHICALMAPTab);

I looked into the documents of the copyobj and once i used the previous code, i was getting not enough input error but I figured aout the correct code later

copyobj(gx,app.GEOGRAPHICALMAPTab) \\ by adding the parent name.

[Adam Danz]

Ah, ok, gx is a GeographicAxes handle, I see that now.

Looks like you hit the target! You were missing the parent input. However, this doesn't address your original question on how to save an image of the figure. Are you still stuck on that? Matlab recently released a few functions that do just that but other methods are needed in older releases.

Answer 1

[Monisha Nalluru]

Hi Vishal,

From my understanding you want to take the existng plot and save it as an image

This can be done by using print method of matlab which allows you to save the image in required format,

Here is an example

latSeattle = 47.62;
lonSeattle = -122.33;
latAnchorage = 61.20;
lonAnchorage = -149.9;
geoplot([latSeattle latAnchorage],[lonSeattle lonAnchorage],'g-*')
geolimits([45 62],[-149 -123])
print('geoimg','-dpng'); % save a file geoimg.png
imshow(imread("geoimg.png")) % display geoimg.png

Hope this helps!

[Vishal Tripathi]

I'm getting errors like print doesn't work in Appdesigner but i solved my problem using exportgraphics function

for more info visit:

https://in.mathworks.com/help/matlab/ref/exportgraphics.html

[Vishal Tripathi]

Thank you for your support @Adam Danz and @Monisha Nalluru