I've pulled my hair out for the past day trying to solve this problem and have done extensive searches to no avail. Here's my situation:
I have data from an autonomous underwater vehicle. I have three np arrays to plot: 1) time on the x axis 2) vehicle depth on the y axis 3) sensor reading to set the color for the scatter plot at time/depth point. Unfortunately for me the vehicle reports sensors at different rates which means that I might have a time and depth stamp with a 'NaN' for the sensor value. The x/y portion of scatter deals with the NaNs with no problem, but when I call scatter(time, depth, c=mySensorArray) and mySensorArray contains a 'NaN' matplotlib borks. I have not been able to come up with a method to allow the values of the sensor being plotted to set the color of the scatter or skip the entry when the value is a 'NaN'. What complicates the matter is that we're only gathering data on the upward profile of the vehicle. Until recently we collected data on both up and down legs of the Yo, so I was able to simply interpolate and fill in the NaN values with the interpolated result and achieve gorgeous scatter plots. That doesn't work when the data stops being gathered at the top of the Yo... interpolating simply repeats the last value all the way back down to the bottom when data values start getting collected again. Thanks for any pointers... I'm really stumped. Bob Currier -- View this message in context: http://matplotlib.1069221.n5.nabble.com/Scatterplot-c-arg-and-NaN-values-autonomous-underwater-vehicle-tp42494.html Sent from the matplotlib - users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ DreamFactory - Open Source REST & JSON Services for HTML5 & Native Apps OAuth, Users, Roles, SQL, NoSQL, BLOB Storage and External API Access Free app hosting. Or install the open source package on any LAMP server. Sign up and see examples for AngularJS, jQuery, Sencha Touch and Native! http://pubads.g.doubleclick.net/gampad/clk?id=63469471&iu=/4140/ostg.clktrk _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
