Hello Uwe,

If I eliminate the date/time the problem persists. The same result. I checked the rectangles and it's right. I tried to use the rectangle's first and last point as x-axis and It doesn't work. It prints as I showed before, just a small piece on the screen's center. I don't think my problem is because of the patch, because I'm using the MultiYAxis patch, I'm applying just for the y-axis, I don't have and use a patch on my x-axis. I have just the two x-axis that Qwt provides, top and bottom.

Do you have any other idea?

Thanks in advance