Hi Phil,
I can confirm that your solution works: I just copied one of these prj-files
and now it displaying correctly.
Thanks again,
Arjen
From: Arjen Markus [mailto:arjen.mar...@deltares.nl]
Sent: Thursday, March 26, 2015 12:26 PM
To: Phil Rosenberg
Cc: plplot-devel@lists.sourceforge.net
Subject: Re: [Plplot-devel] Shapefile incorrectly displayed
Hi Phil,
Thanks for the update - the prj-file should be available somewhere ... Ah, I
see: for this particular file it was missing. I have a number of additional
shapefiles for the same area and the same projection and they have an
accompanying prj-file. That ought to solve it. I will try it.
Regards,
Arjen
> -----Original Message-----
> From: Phil Rosenberg [mailto:p.d.rosenb...@gmail.com]
> Sent: Thursday, March 26, 2015 11:52 AM
> To: Arjen Markus
> Cc: plplot-devel@lists.sourceforge.net
> Subject: Re: [Plplot-devel] Shapefile incorrectly displayed
>
> Oh and one other point. I found a bug which causes a crash if you include the
> .shp
> extension on the map filename. I will commit the fix post release, but in the
> meantime just ensure you omit the extension.
>
> Phil
>
> On 26 March 2015 at 10:46, Phil Rosenberg <p.d.rosenb...@gmail.com> wrote:
> > Hi Arjen
> > Sorry this took me so long to look at.
> >
> > Yes you are correct that the problem arises due to the data not being
> > in lat/lon. To deal with this you need a projection metadata file
> > which has the same filename as the shapefile but a .prj extension. If
> > this file is missing then plplot assumes that the data is lat/lon in
> > degrees so wraps it around the globe - hence the issues you are
> > seeing. If the file exists then plplot only looks at the first 6
> > characters of the file. If these are "PROJCS" then this indicates that
> > the data is projected data and it will not wrap round. If it is
> > anything else (the only other valid option at the moment is GEOGCS)
> > then it assumes that the data is lat/lon in degrees.
> >
> > There is actually an option for having lat/lon in some other units,
> > but I only just found this out now when reading
> > http://support.esri.com/cn/knowledgebase/techarticles/detail/14056.
> >
> > So to fix your problem just create a .prj file containing the
> > characters PROJCS and things will work. If you want to create a full
> > .prj file for your data set then there are details in that link. I
> > presume other viewers make the opposite assumption and assume a
> > projected data set unless they find a .prj file containing GEOGCS.
> > Perhaps we should change our default to match?
> >
> > I assume this behaviour isn't documented, I really should add it and
> > will when I get time.
> >
> > Phil
> >
> > On 24 March 2015 at 06:30, Arjen Markus <arjen.mar...@deltares.nl> wrote:
> >> Hi Phil,
> >>
> >>
> >>
> >> I have just sent you privately a zip file with all the stuff. If you
> >> have not received it (spam filters and virus checkers are sometimes
> >> rather aggressive against such attachments), let me know. (Sending it
> >> directly to you seemed to me to put less strain on the mailing list.)
> >>
> >>
> >>
> >> Regards,
> >>
> >>
> >>
> >> Arjen
> >>
> >>
> >>
> >>> -----Original Message-----
> >>> From: Phil Rosenberg [mailto:p.d.rosenb...@gmail.com]
> >>> Sent: Monday, March 23, 2015 5:44 PM
> >>> To: Arjen Markus
> >>> Cc: plplot-devel@lists.sourceforge.net
> >>> Subject: Re: [Plplot-devel] Shapefile incorrectly displayed
> >>>
> >>
> >>> Hi Arjen
> >>> Could you send me the shapefile and all associated ancillary files
> >>> and I'll have a look it this?
> >>>
> >>> Phil
> >>>
> >>> On 20 March 2015 at 13:51, Arjen Markus <arjen.mar...@deltares.nl> wrote:
> >>> > Hi everyone,
> >>> >
> >>> >
> >>> >
> >>> > I know we are in a code freeze, but I ran into a curious problem
> >>> > with the new plmapfill routines to handle "shape files". While the
> >>> > Plplot example x19 works very nicely, I have a shape file where
> >>> > this is not the case. It may have to do with the use of UTM (x/y)
> >>> > coordinates instead of lat/lon, but the symptom is that the
> >>> > vertical coordinate is scaled and displayed correctly whereas the
> >>> > horizontal coordinate is not. The elements appear to be contained
> >>> > in a narrow box. When I zoom in, the network I expect to see is a
> >>> > bunch of short and unconnected lines. I know the file contains the
> >>> > correct information, because if I use a different viewer I do get the
> >>> > sort of
> network I expect.
> >>> >
> >>> >
> >>> >
> >>> > I have attached two screenshots - they should cover the same
> >>> > coordinates (minus the text) - and the source code for the program.
> >>> >
> >>> >
> >>> >
> >>> > Any thoughts?
> >>> >
> >>> >
> >>> >
> >>> > Regards,
> >>> >
> >>> >
> >>> >
> >>> > Arjen
> >>> >
> >>> >
> >>> >
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