Plotting data labels with the mapping toolbox

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Liam Cusack
Liam Cusack 2012-7-3
I am making a GUI that allows users to search for cities, select the ones they would like to plot, and have it show the cities as a red circle on the map. I also need to give the user the option to deselect and/or copy and paste cities in the plot browser. Right now I am using the following code to plot the cities:
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
for e= 1:length(plotcity.name)
texthandles{e} = textm(plotcity.loc(e,1),plotcity.loc(e,2),plotcity.name{e},'DisplayName',[plotcity.name{e} '(label)']);
cityhandles{e} = plotm(plotcity.loc(e,:),'or','DisplayName',plotcity.name{e});
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
where:
plotcity.name is a 1xn cell array,
plotcity.loc is a nx2 matrix where each row contains the latitude and longitude of the city,
and texthandles and cityhandles are empty cell arrays.
This plots exactly what I want it to, however if I hide a city in the plot browser, it only hides the point at the city's location, the text remains printed on the map with no easy way to remove it.
I have tried making cityhandles and texthandles hggroup objects, making one the parent of the other, playing with the annotation, visibility, tag, and displayname properties, without success.
If someone could recommend a way to plot the cities on the map in such a fashion that they could be copied or removed (with their label) to another plot, I would greatly appreciate it.

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采纳的回答

Walter Roberson
Walter Roberson 2012-7-3
Perhaps linkprop() of the Visible property for the point and its corresponding label.
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Liam Cusack
Liam Cusack 2012-7-3
编辑：Walter Roberson 2012-7-3
Ah thats it, I used:
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
for e= 1:length(plotcity.name)
texthandles(e) = textm(plotcity.loc(e,1),plotcity.loc(e,2),plotcity.name{e});
cityhandles(e) = plotm(plotcity.loc(e,:),'or','DisplayName',plotcity.name{e});
hlink(e) = linkprop([texthandles(e) cityhandles(e)],'Visible');
set(cityhandles,'UserData',hlink(e))
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
and it worked like a charm, Thanks Walt!!!
Walter Roberson
Walter Roberson 2012-7-3
You should move the set() past the end of the loop, and remove the (e)
set(cityhandles,'UserData',hlink)
otherwise the UserData would be overwritten in each iteration.

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更多回答（1 个）

Stephen
Stephen 2012-7-3
could you just refresh the original background image and only plot the updated city info? Completely erase the pre-existing map, in other words.
  1 个评论
Liam Cusack
Liam Cusack 2012-7-3
The shapefile I'm using for the map takes a while to load and I want it to be a faster interface where the user can select and deselect cities as they please.

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