How to add simple rectangle legend inside US map?

Hi all,

I'd like to add a simple legend with two rectangles like the following inside the US map (rectangle No shock, another rectangle with different color Shock)

Did anyone know?

Here is my current code.

clear all; clc;
states = shaperead('usastatehi', 'UseGeoCoords', true);
statenames = {states.Name};
alaska = states(strcmp('Alaska', statenames));
hawaii = states(strcmp('Hawaii', statenames));

f = figure;
hconus = usamap('conus');

for i = 1:51
ccolor = [1 1 1];
geoshow(hconus, states(i),  'FaceColor', ccolor)  
end

framem off; gridm off; mlabel off; plabel off


halaska = axes('Parent',f);
usamap('alaska')
geoshow(alaska, 'FaceColor', [0.23 0.44 0.67]);
framem off; gridm off; mlabel off; plabel off

hhawaii = axes('Parent',f);
usamap('hawaii') 
geoshow(hawaii, 'FaceColor', [1 1 1]);
framem off; gridm off; mlabel off; plabel off

set(hconus, 'Position',[0.1   0.35 0.85 0.6])
set(halaska,'Position',[0.2  0.42 0.2  0.2])
set(hhawaii,'Position',[0.25   0.43  0.2  0.2])

Answer 1

[Vahila Kayithi]

The rectangular legend can be obtained by changing the 'Display Type' property. Create the handles for 'geoshow' and change the 'Display Type' property. Pass the handles to legends.

h(1) = geoshow(alaska, 'FaceColor', [0.23 0.44 0.67],'DisplayType', 'polygon');
h(2) = geoshow(hawaii, 'FaceColor', [0 0 0],'DisplayType', 'polygon') ;
legend([h(1),h(2)],'No Shock','Shock');

For more information, please refer:

https://de.mathworks.com/matlabcentral/answers/492501-how-do-i-make-a-legend-for-my-geoshow-function