How can I plot from a plot handler?

Question

I have the handler of the plot, or handle of the figure Example:

h = plot([1:0.2:10])
xx=get(h)
xx = 

           DisplayName: ''
            Annotation: [1x1 handle]
                 Color: [0 0 1]
             LineStyle: '-'
             LineWidth: 0.5000
                Marker: 'none'
            MarkerSize: 6
       MarkerEdgeColor: 'auto'
       MarkerFaceColor: 'none'
                 XData: [1x46 double]
                 YData: [1x46 double]
                 ZData: [1x0 double]
          BeingDeleted: 'off'
         ButtonDownFcn: []
              Children: [0x1 double]
              Clipping: 'on'
             CreateFcn: []
             DeleteFcn: []
            BusyAction: 'queue'
      HandleVisibility: 'on'
               HitTest: 'on'
         Interruptible: 'on'
              Selected: 'off'
    SelectionHighlight: 'on'
                   Tag: ''
                  Type: 'line'
         UIContextMenu: []
              UserData: []
               Visible: 'on'
                Parent: 173.0107
             XDataMode: 'auto'
           XDataSource: ''
           YDataSource: ''
           ZDataSource: ''

This handler contains all the plot information, how can I plot out again? This is a simple example with plot but it is supposed to work with slice as well.

Answer 1

If I understand your question correctly, you want to reproduce a plot using the struct xx. The answer ccook provided is on the right track, but here's a shorter way to achieve what you want:

figure
h2 = plot(0);
ro_props = [fieldnames(rmfield(xx, fieldnames(set(h2)))); 'Parent'];
xx = rmfield(xx, ro_props);
set(h2, xx)

The last set command uses struct xx to set all the values and reproduce your plot. Note that the read-only properties ro_props are removed from xx before calling set.

EDIT: modified answer to automatically detect read-only properties according to this suggestion.

Answer 2

You can use copyobj

h = plot([1:0.2:10])
xx=get(h)
figure
copyobj(h,gca)

This duplicates the plot onto a new figure

See: http://www.mathworks.com/help/matlab/ref/copyobj.html

UPDATE

I don't think you can create directly from the structure xx, trying to do so:

h = plot([1:0.2:10])
xx=get(h)

h2 = plot(0,0)
set(h2,xx)

Throws an error

Error using graph2d.lineseries/set
Changing the 'Annotation' property of line is not allowed.

You would need to set some of the property values manually like so:

h = plot([1:0.2:10])
xx=get(h)


figure
h2 = plot(0.0)

names = fieldnames(xx);

fieldCount = size(names,1);

protectedNames = {'DisplayName' 'Annotation' 'BeingDeleted' 'Type' 'Parent'}

for i = 1:fieldCount
    name = names{i};
    if ( ismember(protectedNames, name) == false  )


        set(h2, name, getfield(xx,name))

    end
end

yy=get(h2)