Shift data on a figure without reploting

Question

Mary 2020-7-15

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/565343-shift-data-on-a-figure-without-reploting

评论： Mehmed Saad 2020-7-17

Hi,

I lost my data. However, I have the plot of data. I realize that x data should be shifted of one unit. If I had the data, it would have been easy to change the code and do the shift by doing something as: x_new = x_old + ones(size(x_old)). But, unfortunately, it is not the case.

Do you know how the data can be shifted on the figure ?

thanks in advance.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Mehmed Saad 2020-7-15

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/565343-shift-data-on-a-figure-without-reploting#answer_466028

编辑：Mehmed Saad 2020-7-15

在 MATLAB Online 中打开

Suppose that i have a figure

fig = figure,
ax = axes(fig);
rng(2017)
plot(ax,rand(1,10))

Now i dont know what is my data

Suppose that i have just the figure, let us extract data from figure

Line_Obj = findobj(gca,'Type','Line')
X = Line_Obj.XData;
Y = Line_Obj.YData;

Now i add an offset in it

hold on,plot(gca,X,Y+0.5)

Remember that this demonstration is for Line object, if your plot contains any other object like scatter, histrogram etc, you have to change it in findobj

Edit:

if you dont want to plot it, just use copyobj for that purpose

h = copyobj(Line_Obj,gca);
h.Color = 'g';
h.YData = h.YData-0.4;

3 个评论
显示 1更早的评论隐藏 1更早的评论

Walter Roberson 2020-7-15

在 MATLAB Online 中打开

data = cat(1, image_patches,labels);

That code is overwriting all of data each iteration.

It looks to me as if data will not be a vector, but I do not seem to be able to locate any hellopatches() function so I cannot tell what shape it will be. As you are not doing imresize() I also cannot be sure that all of the images are the same size, so I cannot be sure that data will be the same size for each iteration. Under the circumstances you should be considering saving into a cell array.

Note: please do not post the same query multiple times. I found at least 9 copies of your query :(

Mehmed Saad 2020-7-17