Hello, I have matplotlib widget set up in a PyQt 4 program. The axis is set for auto scaling. I'm using the following command to determine the upper y boundary: self.plotWidget.canvas.ax.axis()[3] where plotWidget is the name of the widget in my program. I get a number from this command just fine, but it doesn't always agree with the actual axis on the plot window. For instance, after plotting a curve with a maximum y-value of 0.125, the command above gives me an upper y-limit of 0.14. However, the plot window goes up to y=0.16. Sometimes things work out correctly, but they call above and the plot window do not typically agree. I really need the plot window to match what comes from this call to axis(). Can anyone offer any suggestions on what might be going wrong? Thanks, Steve -- View this message in context: http://old.nabble.com/Values-returned-by-axis%28%29-do-not-match-the-actual-axis-in-the-plot-window-tp27397234p27397234.html Sent from the matplotlib - users mailing list archive at Nabble.com.