限制在 Matlab 中绘图的轴 [英] limit the axes for plotting in Matlab

问题描述

可能的重复:
是否可以选择特定区域散点图

是否可以减少输入文本文件中的数据点，这样我的计算中就不会出现这些数据点.我正在使用以下来读取数据

is it possible to reduce the datapoints from the input text file, so that those dont come in my calculation. I am using following to read the data

fid = fopen('cr.txt');
A =  textscan(fid, '%f %f %f %f %f %*f %*f %*f %*f %*f %*s %*s %*s') ;
%read the file
a = A{1};
e = A{2};
c = A{3};
x = A{4};
y = A{5};

这里 x,y 是距离，如果我应用 xlim 和 ylim，我还想限制文件中相应的 a,e,c.该文件有大约一百万个数据点.

here x,y are the distances and if I apply xlim and ylim, I want to limit the corresponding a,e,c from the file also. the file has around million data points.

我将进一步绘制 x、y 和 z(根据 a、e、c 计算)作为散点和颜色条我用于整个数据点的绘图代码是

And I will be further plotting the x,y and z(which is calculated from a,e,c) as a scatter and colorbar the plotting code I am using for the entire data points is

lg=log10(g2);
scatter(x(1:end-1), y(1:end-1),5, lg);
colorbar('eastoutside');
caxis([14 max(lg)]);
xlabel(' X-axis (microns)');
ylabel('Y-axis (microns)');

lg 是根据前面显示的 a,e,c 确定的.所以我想要做的就是在 x,y 的选定部分和相应的 lg 之间做一个绘图.

the lg is determined from the a,e,c shown earlier. so all I want to do is do a plot between a selected portion of x,y and the corresponding lg.

请帮忙！！

推荐答案

是的，您可以使用 set 或通过调用 直接在 axes 上指定限制xlim、ylim 和 zlim 函数

Yes you can specify the limits directly on the axes using set or by calling the xlim, ylim, and zlim functions

plot(rand(1,100));
set(gca,'XLim', [10 20] ); % set the xlims to 10,20

或

plot(rand(1,100));
xlim([10 20]); % set the xlims to 10,20

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