changing ticks position on the graph

12 次查看（过去 30 天）
Wade
Wade 2023-3-28
评论： Wade 2023-3-29
Hi,
I have a problem that seems to be easy. I have created a heat map in form of matrix but the scale I want to set from -400 to 400. I was able to change the axes numbers but the ticks are at the centre of each square instead to be in between them. How to do it?
Thank you,
Regards,
Matti
  3 个评论
显示 1更早的评论
DGM
DGM 2023-3-28
编辑：DGM 2023-3-28
If the SW element of the heatmap represents data at (-400, -400), then that's where they're supposed to be in order to communicate that relationship.
If that element represents data at (-440, -440), then you might want to fix your x,y data so that it actually corresponds.
Wade
Wade 2023-3-29
thank you for your advice!
BW,
Matti

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Bjorn Gustavsson
Bjorn Gustavsson 2023-3-29
If you have coordinates for the edges of the cdata-elements then you can either adjust things manually to get what you want:
dx = 80;
dy = 80;
heatmap(x+dx/2,y+dy/2,cdata)
set(gca,'xtick',x,'ytick',y)
Or perhaps use pcolor instead of heatmap:
dx = 80;
dy = 80;
pcolor([x(:)',x(end)+dx],[y(:),y(end)+dy],cdata([1:end,end],[1:end,end])),shading flat
That should be rather close, I hope. This centre-of-pixel vs edge-of-pixel is a problem that will always persist and never have a solution that satisfies every user in all cases - we just have to learn to work around the given behaviours to get the output that corresponds to our use-cases.
HTH

类别

在 Help Center 和 File Exchange 中查找有关 Data Distribution Plots 的更多信息

标签

产品


版本

R2023a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by