imshow border tight for subplot

Question

Sukuchha 2012-2-10

2
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/28673-imshow-border-tight-for-subplot

编辑： Erik 2013-10-8

i can hide the grey border around the figure with setting;

iptsetpref('ImshowBorder','tight');
figure;Image = rand(1000,1000);
imshow(Image,[]), colormap jet;

How can i do the same if i am using subplot! iptsetpref doesnot seem to have any effect in subplot.

iptsetpref('ImshowBorder','tight');
figure;
subplot(1,2,1)
imshow(Image,[]), colormap jet;
subplot(1,2,2)  
imshow(Image,[]), colormap jet;

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Sukuchha 2012-2-10

i tried to format code, but some how it is not working !

Sukuchha 2012-2-10

anyone?

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Answer 1

Sean de Wolski 2012-2-10

0
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https://ww2.mathworks.cn/matlabcentral/answers/28673-imshow-border-tight-for-subplot#answer_37034

在 MATLAB Online 中打开

Use subplott to generate axes handles for each individual subplot

h = subplott(3,3);
imshow('cameraman.tif','parent',h(6));
imshow('pout.tif','parent',h(2));

Note, the images will not be tight in both dimensions unless the figure is turned into the correct shape manually and all images are the same shape.

E.g.:

set(gcf,'units','pix')
set(gcf,'position',[200 200 800 800])

With the figure from above. Where subplott.m is:

function [hA] = subplott(nr,nc)
%function to return a figure handle and axes handles for tight subplots
%
%Inputs:
%  r: number of rows
%  c: number of columns
%
%Outputs:
%  hA: axes handles to subplots (styled order, i.e. rows first then columns)
%
%See Also: subplot imshow
%
      %Error Checking:
      assert(nargin==2,'2 inputs expected');
      assert(isscalar(nr)&&isscalar(nc));
      %Other Constants:
      rspan = 1./nr; %row span normalized units
      cspan = 1./nc; %not the tv channel
      na = nr*nc; %num axes
      %Engine  
      rlow = flipud(cumsum(rspan(ones(nr,1)))-rspan); %lower edge
      clow = cumsum(cspan(ones(nc,1)))-cspan;
      [rg cg] = meshgrid(1:nr,1:nc); %grids
      hA = zeros(na,1);
      figure;
      for ii = 1:na
          pos = [clow(cg(ii)) rlow(rg(ii)) cspan rspan]; %positions
          hA(ii) = axes('units','norm','outerposition',pos,'position',pos); %build axes
      end 
  end

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Sukuchha 2012-2-10

thanxs heap ! Thats just awesome!

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Answer 2

Sean de Wolski 2012-2-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/28673-imshow-border-tight-for-subplot#answer_37027

在 MATLAB Online 中打开

Instead of using subplot, build the axes directly:

figure('units','pixels','position',[200 200 800 400]); 5fig
axes('units','norm','outerposition',[0 0 0.5 1],'position',[0 0 0.5 1]) %left axes
imshow(rand(100),[])
axes('units','norm','outerposition',[0.5 0 0.5 1],'position',[0.5 0 0.5 1]) %right axes
imshow(imread('cameraman.tif'),[])

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Sukuchha 2012-2-10

thanks Sean, it works wonderfully for two axes ! But i have around 12 axes, i dont want to write outerposition and position vector individually to each axes.

lets say i create a figure with

figure('units','normalized','outerposition',[0 0 1 1]);

is there a way to generate those outerposition and position vector for any arbitary division N.