[英]Scatter plot in Matlab with x-axis ticks not equidistant
Consider the following scatter plot in Matlab 考虑以下Matlab中的散点图
A=[1 0 0 0 2 0 0 0 0 0 0 0 1 2 0 0 0 2 1 200 300]';
xRange = 0: max(A);
prob=zeros(size(xRange,2),1);
for r=1:size(xRange,2)
prob(r) = sum(ismember(A,xRange(r)))/size(A,1);
end
scatter(xRange,prob, 'b');
xlim([-2 max(A)+2])
ylim([-0.5 1.5])
I want to change the way the scatter looks like in order to make it more clear: the idea is to put the following ticks on the x-axis 我想更改散点图的方式以使其更清晰:其想法是在x轴上放置以下刻度
[-0.5 0 1 2 3 301]
but the tricky part is that they should be equidistant so that I can zoom on the part of the scatter plot with higher values of prob
. 但是棘手的是他们应该等距,这样我可以用较高的
prob
值放大散点图的部分。
Any idea? 任何想法?
One way to achieve this is to transform the data to a new scale using interpolation. 实现此目的的一种方法是使用插值将数据转换为新的比例。 Let's say you want the data values
假设您要数据值
tickVal = [-0.5 0 1 2 3 301];
to appear at the graphical positions 出现在图形位置
tickPos = 0 : 5;
Determine the graphical positions for all the data by interpolation, and plot the transformed data: 通过插值确定所有数据的图形位置,并绘制转换后的数据:
xTransformed = interp1(tickVal, tickPos, xRange);
scatter(xTransformed, prob, 'b');
xlim([min(tickPos), max(tickPos)])
ylim([-0.5 1.5])
Now we have to make sure that the ticks do not reflect the transformed, but the original data values: 现在,我们必须确保刻度线不反映转换后的值,而是原始数据值:
set(gca, 'XTick', tickPos)
set(gca, 'XTickLabel', num2cell(tickVal))
The result looks like this: 结果看起来像这样:
Is this what you want? 这是你想要的吗?
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