Pascoe, S (Stephen) wrote: > Thanks Jeff, > > Unfortunately another issue is with plotting the axes tick labels. This > output is for a public service where the users expect to see eastings > and northings displayed from the official UK national grid origin. I > can use standard matplotlib axes to produce eastings/northings but with > your solution the origin would be shown as in the wrong place. > > I can envisage solving this by creating a tick Formatter object that > offsets the axes. Maybe that is my solution but I was hoping for a > simpler way. > > Cheers, > Stephen. >
Stephen: Using a TickFormatter is probably the best solution. -Jeff P.S. Could you send me an example when you're done - perhaps to include in the examples directory? > --- > Stephen Pascoe +44 (0)1235 445980 > British Atmospheric Data Centre > Rutherford Appleton Laboratory > > -----Original Message----- > From: Jeff Whitaker [mailto:[EMAIL PROTECTED] > Sent: 12 October 2007 13:11 > To: Pascoe, S (Stephen) > Cc: matplotlib-users@lists.sourceforge.net > Subject: Re: [Matplotlib-users] Basemap with origin within the plot > > Pascoe, S (Stephen) wrote: > >> I am trying to prepare a plot on the UK national grid. This is a >> > transverse mercator projection centred on the UK with a false origin > offset from the projection origin (lat_0, lon_0). > >> The Basemap coordinate system origin (0 Easting and Northing) always >> > seems to be set in the lower-left corner of the plot. The plot I need > includes data either side of the origin so I need the origin within the > plot area. > >> Is there a general way of setting the origin somewhere other than the >> > lower-left corner? > >> I can either get basemap to plot the correct data region, in which >> > case the origin is in the wrong place or I can fool Basemap by adjusting > the axes bounds later. However, if I do this some of the coastline > isn't plotted because Basemap decides it isn't on the map. > >> Cheers, >> Stephen. >> >> >> >> > Stephen: There's no way to change the coordinate system Basemap uses. > To get you data to plot in the correct place, just add an offset > > xoffset, yoffset = map(lon_0, lat_0) > > to the UK national grid coordinates of the data you are plotting. > > HTH, > > -Jeff > > -- Jeffrey S. Whitaker Phone : (303)497-6313 NOAA/OAR/CDC R/PSD1 FAX : (303)497-6449 325 Broadway Boulder, CO, USA 80305-3328 ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
