You have to do it this way in the Composer, the whole point of a a geographic grid is to put it on a non-geographic projection map, for navigation purposes.
This is clearly a bug. -Alex On 06/02/2016 05:51 AM, Nicolas Cadieux wrote: > Hi, > I am trying to understand. You said " I had some Antarctic polar > stereographic data and when applying a  > WGS-84 long-lat grid in map composer" . > That means you have 2 CRS. One in Polar stereographic and the graticule > are in WGS84. You are therefore reprojecting on the fly. That is always a bad > idea when mixing two very different CRS as this sometimes creates crazy > things like missing lines, exploding line and odd looking stuff. > To solve this, save everything in the same CRS and make sure the grid in the > map composer and the project are in the same CRS as all the data. > "As you say, the other option is to generate a vector grid and densify, > however you then lose the label function that you have in the composer." > You can probably create a transparent grid in the map composer but use opaque > labels. > If I am not understanding properly, send a screen shot or a a zipped project. > Nicolas > On Jun 2, 2016 01:36, "Lester Anderson [via OSGeo.org] " > <[email protected]> wrote: > > Hi Nicolas, The grid I have is already projected in an Antarctic South > polar, so that was not the issue with on the fly projection. I just fail to > understand why the graticules in map composer seem odd in Polar views. As you > say, the other option is to generate a vector grid and densify, however you > then lose the label function that you have in the composer. Coastline data > reproject fine on both South and North Polar views. Will keep investigating > this one Lester On 1 June 2016 at 17:40, Nicolas Cadieux < [hidden email] > > wrote: Hi, > When crossing the equator, 0 or 180 degrees, you will always have difficulty > reprojecting shapes on the fly. That is what you are doing. Your project is > in polar but you are creating a grid in WGS84. > That grid is being reprojected on the polar project. That will always happen > when you try mix a more "global" CRS and a "local" > projection. > Make sure everything is in the same CRS. (Save as.. change CRS). > Do not reprojection anything including the grids in the map composer. > If that does not work, you could always create the grid that you need (You > may need to densify the shape). Save it in the correct CRS. You could then > probably add a transparent grid in the map composer. This way, you would get > the coordinates around the map but not the problems with the grid. > Hope this helps. > Nicolas > > On Jun 1, 2016 11:14 AM, Lester Anderson < [hidden email] > wrote: Hi > Nicolas, The problem is not so much with the grid as that displays fine. The > issue crops up with the map composer, and even with the grid as WGS-84 the > same problem persists. Looked at both North and South polar views and the 180 > graticule is always missing irrespective of the increment used. The latitude > lines do not change and are clear line segments; these should be smoother. > Data that are in UTM and with WGS-84 graticules look fine (smooth latitude > lines). Is there an issue with Polar views and graticules? Lester On 1 June > 2016 at 11:41, Nicolas Cadieux < [hidden email] > wrote: Hi, > Try saving the layer in WGS-84. Then make sure the project is also in the > same projection. It can help sometimes to make a spatial index. > Keep me posted. > Nicolas > On Jun 1, 2016 05:35, "Lester Anderson [via OSGeo.org] " < > [hidden email] > wrote: > > Hello, > I had some Antarctic polar stereographic data and when applying a > WGS-84 long-lat grid in map composer it generated most of the > longitude lines (180 missing), and very crude latitude lines (clearly > visible straight line segments). > Is there any way to improve the latitude lines? > Lester > Tested in 2.10, 2.12, 2.14 > _______________________________________________ > Qgis-user mailing list > <a > href="/user/SendEmail.jtp?type&#61;node&amp;node&#61;5269310&amp;i&#61;0">[hidden > email] > List info: http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: > http://lists.osgeo.org/mailman/listinfo/qgis-user Ant2016.jpg (38K) Download > Attachment > > > > > > > > > If you reply to this email, your message will be added to the > discussion below: > > http://osgeo-org.1560.x6.nabble.com/Antarctic-polar-stereographic-graticules-composer-tp5269310.html > > > > To start a new topic under Quantum GIS - User, email [hidden > email] > To unsubscribe from Quantum GIS - User, <a href=" > http://osgeo-org.1560.x6.nabble.com/template/NamlServlet.jtp?macro&#61;unsubscribe_by_code&amp;node&#61;4125267&amp;code&#61;bmljb2xhcy5jYWRpZXV4QGFyY2hlb3RlYy5jYXw0MTI1MjY3fDYzNDQ4MjQxNg&#61;&#61 > ;">click here. > <a href=" > http://osgeo-org.1560.x6.nabble.com/template/NamlServlet.jtp?macro&#61;macro_viewer&amp;id&#61;instant_html%21nabble%3Aemail.naml&amp;base&#61;nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&amp;breadcrumbs&#61;notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml > " style="font:9px serif">NAML > > > > > > > View this message in context: Re: Antarctic polar stereographic graticules > (composer) > Sent from the Quantum GIS - User mailing list archive at Nabble.com. > _______________________________________________ > Qgis-user mailing list > [hidden email] > List info: http://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user > > _______________________________________________ > Qgis-user mailing list > [hidden email] > List info: http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: > http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > > > > > > If you reply to this email, your message will be added to the > discussion below: > > http://osgeo-org.1560.x6.nabble.com/Antarctic-polar-stereographic-graticules-composer-tp5269310p5269466.html > > > > To start a new topic under Quantum GIS - User, email > ml-node+s1560n4125267h38@n6.nabble.com > To unsubscribe from Quantum GIS - User, click here . > NAML > > > > > -- > View this message in context: > http://osgeo-org.1560.x6.nabble.com/Antarctic-polar-stereographic-graticules-composer-tp5269310p5269548.html > Sent from the Quantum GIS - User mailing list archive at Nabble.com. > > > > _______________________________________________ > Qgis-user mailing list > [email protected] > List info: http://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user > _______________________________________________ Qgis-user mailing list [email protected] List info: http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
