删除死区或增加子图中的图形大小 [英] Remove deadspace or increase size of figure in subplot
问题描述
我在matlab中遇到了问题。我输出一个图像,如示例所示,并通过print命令保存。我想要做的是以没有死空间的方式保存图像,即我想删除保存图像中的空白区域。
I have a problem in matlab. I output an image as shown in the example and save it by the print command. What I want to do is save the image in such a way that there is no deadspace i.e, I want to remove the white-space in the image saved.
示例:
黑色边框显示总数图像占据的区域。这真是一个浪费空间。我想删除它。我想要做的是:
The black border shows the total area the image is occupying. This is a really a wastage of space. I want to remove this. What I want to do is this:
我手动删除了图像周围的白色区域。但我想通过print命令自动执行此操作。可以吗?如果可能,标题仍然可以吗?即使它被删除然后也没关系,但如果标题可以保持更好。
I have manually removed the white area around the image. But I want to do this automatically by the print command. Can it be done? Also if possible can the title remain ? Even if it gets removed then also its okay but if the title can remain its better.
推荐答案
我在这里回复了这个其他主题并举例说明了如何在这里改进轴(子图)空间使用情况(搜索函数 kmeans_test
中的子函数 setCustomPlotArea
。
I answered this at this other topic and also gave an example of how to improve axes (subplot) space usage here (search for the subfunction setCustomPlotArea
inside the function kmeans_test
).
简短的回答是扩展轴位置占据整个数字如下:
The short answer is to spread axes position to occupy the whole figure as follows:
set(gca,'Position',[0 0 1 1]) % Make the axes occupy the whole figure
但如果你想保留ylabel,xlabel ,依此类推,您将不得不使用以下方法:
But if you want to keep ylabel, xlabel, and so on, you will have to use the following approach:
figure
plot([1 3])
title('Cool title')
ylabel('Ylabel yeah')
xlabel('Xlabel nah')
% Approach
tightPos=get(gca,'TightInset')
noDeadSpacePos = [0 0 1 1] + [tightPos(1:2) -(tightPos(1:2) + ...
tightPos(3:4))];
set(gca,'Position',noDeadSpacePos)
这给出了下图:
我已经调整了setCustomPlotArea,如下所示:
I have adapted the setCustomPlotArea as follows:
function squeeze_axes(handles)
%
% squeeze_axes(handles) Squeeze axes to remove dead space.
%
% Inputs:
%
% -> handles: the subplot axes handles organized as a grid. I.e.
% handles(1,1) is the axes in the first line and first column, whereas
% handles(4,4) is the axes in the forth line and forth column.
%
% - Creation Date: Mon, 16 Sep 2013
% - Last Modified: Tue, 17 Sep 2013
% - Author(s):
% - W.S.Freund <wsfreund_at_gmail_dot_com>
% TODO: Make squeeze axes compatible with axes that occupy multiple
% subplot places.
nHorSubPlot = size(handles,2);
nVertSubPlot = size(handles,1);
subplotWidth = 1/nHorSubPlot;
subplotHeight = 1/nVertSubPlot;
botPos = linspace(1-subplotHeight,0,nVertSubPlot);
leftPos = linspace(0,1-subplotWidth,nHorSubPlot);
for curLine=1:nVertSubPlot
for curColumn=1:nHorSubPlot
curAxes = handles(curLine,curColumn);
if curAxes
% Set OuterPosition to occupy as most space as possible
curAxesOuterPos = [leftPos(curColumn) botPos(curLine) subplotWidth ...
subplotHeight];
set(curAxes,'OuterPosition',curAxesOuterPos);
% Remove dead space inside subplot border:
curAxesTightPos=get(curAxes,'TightInset');
noDeadSpacePos = curAxesOuterPos + [curAxesTightPos(1:2) ...
-(curAxesTightPos(1:2) + curAxesTightPos(3:4))];
set(curAxes,'Position',noDeadSpacePos)
end
end
end
end
绘制常用的matlab子图函数如下:
Ploting the common matlab subplot function as follows:
figure
nLines = 2;
nColumns = 3;
handles = zeros(nLines,nColumns)
for line = 1:nLines
for column = 1:nColumns
handles(line,column)=subplot(nLines,nColumns,column+(line-1)*nColumns);
plot([line column]);
title(sprintf('Cool title (%d,%d)',line,column))
ylabel(sprintf('Ylabel yeah (%d,%d)',line,column))
xlabel(sprintf('Xlabel nah (%d,%d)',line,column))
end
end
给你:
删除死区:
squeeze_axes(handles)
作为练习,我让你的轴有一个占据网格中多个空间的情况。
As an exercise I let the case where you have an axes occupying more than one space in the grid.
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