how to correct plotting
显示 更早的评论
when i'm trying to plot in my code, results seems to be flipped upside down...how can i correct it, and why it i that way? thank you in advance
采纳的回答
Walter Roberson
2016-2-10
When you use image() or imagesc() or imshow(), MATLAB assumes you want "axis image", one side effect of which is to set the axis YDir to 'reverse'. It does this so that the "top" (lower row numbers) of the image show up at the top of the screen, because that is how people typically construct image arrays. Normally MATLAB follows Cartesian plotting conventions, where the low values are at the bottom of the screen with Y increasing upwards.
If you want your Y to increase from the bottom then you need to
set(gca, 'YDir', 'normal')
after you display your image. If this plots your image upside down from what you want, then you will need to ask to display flipud() of the image matrix,
imshow(flipud(YourArray))
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Images 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
