Highlighting a portion of an image created from a matrix using "pcolor"

6 次查看（过去 30 天）

Ismaeel 2019-3-4

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/448067-highlighting-a-portion-of-an-image-created-from-a-matrix-using-pcolor

编辑： Ismaeel 2019-3-4

I have created an image to visualize a matrix I have using pcolor function. The plot is shown below. I want to highlight elements of the matrix located in the range [65 95] using a square frame or anything else. I have created a square around this area manually but it is not perfect. Any idea?

Thanks

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。

采纳的回答

Walter Roberson 2019-3-4

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/448067-highlighting-a-portion-of-an-image-created-from-a-matrix-using-pcolor#answer_363638

在 MATLAB Online 中打开

You can use rectangle() to draw on the display.
You can use the Computer Vision function insertShape() to write into an array (probably displaying the array later)
You can use assignment statements to write into an array (probably displaying the array later)

xloc = 65:95;
yloc = 65:100;
YourArray(yloc, xloc([1 end]), :) = 255;   %left and right edges
YourArray(yloc([1 end]), xloc, :) = 255;   %top and bottom edges

4 个评论
显示 2更早的评论隐藏 2更早的评论

Ismaeel 2019-3-4

So, the matrix I have is of [176 176] dimension.I wanted to label both axes with their corresponding row and column number; that is, from 1 to 176 on both axes. Or, if the labels are so dense and can't be read, I wonder if I can divide the labels into groups.

Ismaeel 2019-3-4