Return figure handle from a function

2017 7 12
2 个回答
回答已采纳
更新时间：2017 7 12
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0 个投票

I have a function that plots two variables and returns the plot handle. This function is currently returning a line object instead of a figure. How can I force MATLAB to return a figure?
%%Plotting function
function li = liner(a,b)
li = plot(a,b);
end
%% From prompt >> a =0:1:10; >> c = liner(a, 2*a); >> class(c)
ans =
'matlab.graphics.chart.primitive.Line'

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 采纳的回答

Jan
Jan 2017-7-12
编辑：Jan 2017-7-12

5 个投票

function FigH = liner(a,b)
LineH = plot(a,b);
FigH = ancestor(LineH, 'figure');
end
This replies the figure the plot is created it. This works if the figure was opened before, or implicitely by the plot command. If you want a new figure in every case:
function FigH = liner(a,b)
FigH = figure;
plot(a,b);
end

更多回答（1 个）

Fangjun Jiang
Fangjun Jiang 2017-7-12

1 个投票

Try this?
%%Plotting function
function li = liner(a,b)
li = figure;
plot(a,b);
end

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