From Christian.Heine at shell.com Sat Oct 1 00:00:21 2016 From: Christian.Heine at shell.com (Christian.Heine at shell.com) Date: Fri, 30 Sep 2016 14:00:21 +0000 Subject: [GPlates-discuss] plotting plate convergence / divergence In-Reply-To: <7f59c274-81a6-6dc9-4d2d-c62593057f8f@rwth-aachen.de> References: <7f59c274-81a6-6dc9-4d2d-c62593057f8f@rwth-aachen.de> Message-ID: <79A2F7156CC1D441B593C58CF6BECAD9AE55E242@SEACMW-S-53401.europe.shell.com> Christoph, I guess one way I'd go about this would be to use GPlates's velocity colatitudes/colongitudes - see attached colongitude output from the kinematics tool for a scenario between India and a fixed Madagascar. So the recipe would be to fix one plate and simply extract the colat/colong velocities of the one you're interested in to derive a net convergence/divergence. This would pretty much follow Cox & Hart's "Plate tectonics: how it works" and use simple vector calc (or Fowler's "Solid Earth p13ff). There've been a few papers where this has been looked at - have a look at Maloney et al looking at the dynamics of subduction along the Sth American margin (http://onlinelibrary.wiley.com/doi/10.1002/tect.20067/full). Graphically visualising this in GPlates would be a bit more tricky I suppose, but would have to think about this. Hope this helps, Christian > I was wondering if in addition to plotting relative motion paths, it > would be possible to plot relative convergence & divergence of two > selected plates. I imagine sth where convergence is positive, and > divergence is negative, as opposed to the always positive motion paths. > Unfortunately I did not find it in the tutorials. Any idea is greatly > appreciated. Thanks, > > Christoph > > > > -- > Dr. Christoph von HAGKE > Assistant Professor > > Institute of Structural Geology, Tectonics and Geomechanics RWTH Aachen > University, Lochnerstra?e 4-20, 52056 Aachen, Germany > > Ph.: +49 241 80 98443 -- Christian Heine, Ph.D. Upstream - Opportunity Identification (UPX/N/OH) Shell Intl. Exploration and Production B.V. Carel van Bylandtlaan 5 | C05-01-B33 2596 HP Den Haag, The Netherlands SIP +31 70 3774 341 W: http://www.shell.com G: http://goo.gl/7GfvPZ From bruce.eglington at usask.ca Tue Oct 18 04:51:16 2016 From: bruce.eglington at usask.ca (Eglington, Bruce) Date: Mon, 17 Oct 2016 17:51:16 +0000 Subject: [GPlates-discuss] Problem linking raster to polygon file Message-ID: Hi I have a raster image which I need to connect to a reconstructed polygon but every time I try, GPlates freezes. I can make the connection for the same raster with another, simpler raster so I presume that the issue has to do with the polygon shapefile. Further checks demonstrate that the issue only relates to my collection of polygons for Antarctica. Can anybody suggest what I should check for. I have performed a Repair Geometry and Check Geometry in ArcGIS with no issues noted. Regards Bruce Bruce Eglington (Ph.D.) Murray Pyke Chair Geological Sciences University of Saskatchewan 114 Science Place Saskatoon SK S7N 4K8 Canada bruce.eglington at usask.ca +1-306-966-5732 -------------- next part -------------- An HTML attachment was scrubbed... URL: From sabin.zahirovic at sydney.edu.au Tue Oct 18 09:39:50 2016 From: sabin.zahirovic at sydney.edu.au (Sabin Zahirovic) Date: Mon, 17 Oct 2016 22:39:50 +0000 Subject: [GPlates-discuss] Problem linking raster to polygon file Message-ID: <6F3ED6CD-9729-42BE-ABA5-ED2F3A71C29F@sydney.edu.au> Hi Bruce, Hope you?ve been well! It could be something to do with the polygons, I?ve had similar issues in the past ? although John has worked really hard on fixing those issues and has immensely improved how GPlates handles certain polygons. As you mention, Repair Geometry in ArcGIS is very helpful as it deleted features with Null geometries, and also fixes self-intersecting polygons. If you have very detailed polygons, say that have points so close to each other that GPlates thinks the polygon is self-intersecting, then this might cause some issues, although John has definitely fixed many aspects of this. Make sure that your polygons don?t have duplicate Feature Ids. This happens when you save out polygons from GPlates, and then cut them into sub-components in ArcGIS, leading to each portion of the polygon having the same Feature ID. Can you confirm that you have the latest version of GPlates (1.5) installed? Also, it might be best to isolate one polygon that triggers the problem, and you can send it to me offline, and I can have a look at it. If it?s to do with the raster, it might be to do with the resolution of the file. I attach an OLD troubleshooting file I wrote up, which was before many of the fixes that John implemented, but it could be worthwhile having a look at some of the issues (especially if your polygons are not WGS84 or might have geometries beyond the geographic range). Cheers, Sabin -- DR SABIN ZAHIROVIC | Postdoctoral Research Associate School of Geosciences | Faculty of Science THE UNIVERSITY OF SYDNEY Rm 403, Madsen Building F09 | The University of Sydney | NSW | 2006 M +61 416 775 589 P +61 2 9351 3625 E sabin.zahirovic at sydney.edu.au | W http://www.earthbyte.org | R http://www.researchgate.net/profile/Sabin_Zahirovic F https://www.facebook.com/earthbyte | T https://twitter.com/EarthByteGroup Faculty contact for the Society of Exploration Geophysicists (SEG) - Member # 283117 Most recent publications: Zahirovic, S., Matthews, K.J., Flament, N., M?ller, R.D., Hill, K.C., Seton, M. and Gurnis, M., (In Press), Tectonic evolution and deep mantle structure of the eastern Tethys since the latest Jurassic, Earth Science Reviews, doi: 10.1016/j.earscirev.2016.09.005. Zahirovic, S., N. Flament, R. D. M?ller, M. Seton, and M. Gurnis (In Press), Large fluctuations of shallow seas in low-lying Southeast Asia driven by mantle flow, Geochemistry, Geophysics, Geosystems, doi: 10.1002/2016GC006434. CRICOS 00026A This email plus any attachments to it are confidential. Any unauthorised use is strictly prohibited. If you receive this email in error, please delete it and any attachments. From: GPlates-discuss on behalf of "Eglington, Bruce" Reply-To: GPlates general discussion mailing list Date: Tuesday, 18 October 2016 at 4:51 AM To: "GPlates general discussion mailing list (gplates-discuss at mail.usyd.edu.au)" Subject: [GPlates-discuss] Problem linking raster to polygon file Hi I have a raster image which I need to connect to a reconstructed polygon but every time I try, GPlates freezes. I can make the connection for the same raster with another, simpler raster so I presume that the issue has to do with the polygon shapefile. Further checks demonstrate that the issue only relates to my collection of polygons for Antarctica. Can anybody suggest what I should check for. I have performed a Repair Geometry and Check Geometry in ArcGIS with no issues noted. Regards Bruce Bruce Eglington (Ph.D.) Murray Pyke Chair Geological Sciences University of Saskatchewan 114 Science Place Saskatoon SK S7N 4K8 Canada bruce.eglington at usask.ca +1-306-966-5732 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: Troubleshooting static polygons in ArcGIS and GPlates_v2.pdf Type: application/pdf Size: 1405707 bytes Desc: Troubleshooting static polygons in ArcGIS and GPlates_v2.pdf URL: From john.cannon at sydney.edu.au Tue Oct 18 15:42:16 2016 From: john.cannon at sydney.edu.au (John Cannon) Date: Tue, 18 Oct 2016 04:42:16 +0000 Subject: [GPlates-discuss] Problem linking raster to polygon file In-Reply-To: <6F3ED6CD-9729-42BE-ABA5-ED2F3A71C29F@sydney.edu.au> References: <6F3ED6CD-9729-42BE-ABA5-ED2F3A71C29F@sydney.edu.au> Message-ID: <1E57973145EDFC41B1D69DE1192392280184A80334@ex-mbx-pro-05> Hi Bruce, Sabin's trouble-shooting article is definitely the way to go for your problem (in GPlates 1.5 and earlier). And, as Sabin mentions, GPlates 2.0 will fix a lot of these problems. And will also support self-intersecting and donut polygons. And will link up much faster (when you connect raster to polygons layer). It will be out November for sure. In the meantime, as Sabin mentioned, if you can isolate one problem polygon then Sabin or I can verify it offline with a pre-2.0 build. Regards, John ________________________________ From: GPlates-discuss [gplates-discuss-bounces at mailman.sydney.edu.au] on behalf of Sabin Zahirovic [sabin.zahirovic at sydney.edu.au] Sent: Tuesday, 18 October 2016 9:39 AM To: GPlates general discussion mailing list Subject: Re: [GPlates-discuss] Problem linking raster to polygon file Hi Bruce, Hope you?ve been well! It could be something to do with the polygons, I?ve had similar issues in the past ? although John has worked really hard on fixing those issues and has immensely improved how GPlates handles certain polygons. As you mention, Repair Geometry in ArcGIS is very helpful as it deleted features with Null geometries, and also fixes self-intersecting polygons. If you have very detailed polygons, say that have points so close to each other that GPlates thinks the polygon is self-intersecting, then this might cause some issues, although John has definitely fixed many aspects of this. Make sure that your polygons don?t have duplicate Feature Ids. This happens when you save out polygons from GPlates, and then cut them into sub-components in ArcGIS, leading to each portion of the polygon having the same Feature ID. Can you confirm that you have the latest version of GPlates (1.5) installed? Also, it might be best to isolate one polygon that triggers the problem, and you can send it to me offline, and I can have a look at it. If it?s to do with the raster, it might be to do with the resolution of the file. I attach an OLD troubleshooting file I wrote up, which was before many of the fixes that John implemented, but it could be worthwhile having a look at some of the issues (especially if your polygons are not WGS84 or might have geometries beyond the geographic range). Cheers, Sabin -- DR SABIN ZAHIROVIC | Postdoctoral Research Associate School of Geosciences | Faculty of Science THE UNIVERSITY OF SYDNEY Rm 403, Madsen Building F09 | The University of Sydney | NSW | 2006 M +61 416 775 589 P +61 2 9351 3625 E sabin.zahirovic at sydney.edu.au | W http://www.earthbyte.org | R http://www.researchgate.net/profile/Sabin_Zahirovic F https://www.facebook.com/earthbyte | T https://twitter.com/EarthByteGroup Faculty contact for the Society of Exploration Geophysicists (SEG) - Member # 283117 Most recent publications: Zahirovic, S., Matthews, K.J., Flament, N., M?ller, R.D., Hill, K.C., Seton, M. and Gurnis, M., (In Press), Tectonic evolution and deep mantle structure of the eastern Tethys since the latest Jurassic, Earth Science Reviews, doi: 10.1016/j.earscirev.2016.09.005. Zahirovic, S., N. Flament, R. D. M?ller, M. Seton, and M. Gurnis (In Press), Large fluctuations of shallow seas in low-lying Southeast Asia driven by mantle flow, Geochemistry, Geophysics, Geosystems, doi: 10.1002/2016GC006434. CRICOS 00026A This email plus any attachments to it are confidential. Any unauthorised use is strictly prohibited. If you receive this email in error, please delete it and any attachments. From: GPlates-discuss on behalf of "Eglington, Bruce" Reply-To: GPlates general discussion mailing list Date: Tuesday, 18 October 2016 at 4:51 AM To: "GPlates general discussion mailing list (gplates-discuss at mail.usyd.edu.au)" Subject: [GPlates-discuss] Problem linking raster to polygon file Hi I have a raster image which I need to connect to a reconstructed polygon but every time I try, GPlates freezes. I can make the connection for the same raster with another, simpler raster so I presume that the issue has to do with the polygon shapefile. Further checks demonstrate that the issue only relates to my collection of polygons for Antarctica. Can anybody suggest what I should check for. I have performed a Repair Geometry and Check Geometry in ArcGIS with no issues noted. Regards Bruce Bruce Eglington (Ph.D.) Murray Pyke Chair Geological Sciences University of Saskatchewan 114 Science Place Saskatoon SK S7N 4K8 Canada bruce.eglington at usask.ca +1-306-966-5732 -------------- next part -------------- An HTML attachment was scrubbed... URL: From bruce.eglington at usask.ca Tue Oct 18 23:55:29 2016 From: bruce.eglington at usask.ca (Eglington, Bruce) Date: Tue, 18 Oct 2016 12:55:29 +0000 Subject: [GPlates-discuss] Problem linking raster to polygon file In-Reply-To: <1E57973145EDFC41B1D69DE1192392280184A80334@ex-mbx-pro-05> References: <6F3ED6CD-9729-42BE-ABA5-ED2F3A71C29F@sydney.edu.au> <1E57973145EDFC41B1D69DE1192392280184A80334@ex-mbx-pro-05> Message-ID: <4023a4cf7efa4b18aacdbfda07517d7f@Mail01.usask.ca> Hi John and Sabin Thanks for the suggestions and notes. Sabin, if these are not already part of the GPlates documentation, they ought to be. Great job summarizing what to watch out for, even if newer versions of the software will be more tolerant. I am working at isolating the issue, based on your notes and will get back to you. Bruce Bruce Eglington (Ph.D.) Murray Pyke Chair Geological Sciences University of Saskatchewan 114 Science Place Saskatoon SK S7N 4K8 Canada bruce.eglington at usask.ca +1-306-966-5732 From: GPlates-discuss [mailto:gplates-discuss-bounces at mailman.sydney.edu.au] On Behalf Of John Cannon Sent: Monday, October 17, 2016 22:42 To: GPlates general discussion mailing list Subject: Re: [GPlates-discuss] Problem linking raster to polygon file Hi Bruce, Sabin's trouble-shooting article is definitely the way to go for your problem (in GPlates 1.5 and earlier). And, as Sabin mentions, GPlates 2.0 will fix a lot of these problems. And will also support self-intersecting and donut polygons. And will link up much faster (when you connect raster to polygons layer). It will be out November for sure. In the meantime, as Sabin mentioned, if you can isolate one problem polygon then Sabin or I can verify it offline with a pre-2.0 build. Regards, John ________________________________ From: GPlates-discuss [gplates-discuss-bounces at mailman.sydney.edu.au] on behalf of Sabin Zahirovic [sabin.zahirovic at sydney.edu.au] Sent: Tuesday, 18 October 2016 9:39 AM To: GPlates general discussion mailing list Subject: Re: [GPlates-discuss] Problem linking raster to polygon file Hi Bruce, Hope you've been well! It could be something to do with the polygons, I've had similar issues in the past - although John has worked really hard on fixing those issues and has immensely improved how GPlates handles certain polygons. As you mention, Repair Geometry in ArcGIS is very helpful as it deleted features with Null geometries, and also fixes self-intersecting polygons. If you have very detailed polygons, say that have points so close to each other that GPlates thinks the polygon is self-intersecting, then this might cause some issues, although John has definitely fixed many aspects of this. Make sure that your polygons don't have duplicate Feature Ids. This happens when you save out polygons from GPlates, and then cut them into sub-components in ArcGIS, leading to each portion of the polygon having the same Feature ID. Can you confirm that you have the latest version of GPlates (1.5) installed? Also, it might be best to isolate one polygon that triggers the problem, and you can send it to me offline, and I can have a look at it. If it's to do with the raster, it might be to do with the resolution of the file. I attach an OLD troubleshooting file I wrote up, which was before many of the fixes that John implemented, but it could be worthwhile having a look at some of the issues (especially if your polygons are not WGS84 or might have geometries beyond the geographic range). Cheers, Sabin -- DR SABIN ZAHIROVIC | Postdoctoral Research Associate School of Geosciences | Faculty of Science THE UNIVERSITY OF SYDNEY Rm 403, Madsen Building F09 | The University of Sydney | NSW | 2006 M +61 416 775 589 P +61 2 9351 3625 E sabin.zahirovic at sydney.edu.au | W http://www.earthbyte.org | R http://www.researchgate.net/profile/Sabin_Zahirovic F https://www.facebook.com/earthbyte | T https://twitter.com/EarthByteGroup Faculty contact for the Society of Exploration Geophysicists (SEG) - Member # 283117 Most recent publications: Zahirovic, S., Matthews, K.J., Flament, N., M?ller, R.D., Hill, K.C., Seton, M. and Gurnis, M., (In Press), Tectonic evolution and deep mantle structure of the eastern Tethys since the latest Jurassic, Earth Science Reviews, doi: 10.1016/j.earscirev.2016.09.005. Zahirovic, S., N. Flament, R. D. M?ller, M. Seton, and M. Gurnis (In Press), Large fluctuations of shallow seas in low-lying Southeast Asia driven by mantle flow, Geochemistry, Geophysics, Geosystems, doi: 10.1002/2016GC006434. CRICOS 00026A This email plus any attachments to it are confidential. Any unauthorised use is strictly prohibited. If you receive this email in error, please delete it and any attachments. From: GPlates-discuss > on behalf of "Eglington, Bruce" > Reply-To: GPlates general discussion mailing list > Date: Tuesday, 18 October 2016 at 4:51 AM To: "GPlates general discussion mailing list (gplates-discuss at mail.usyd.edu.au)" > Subject: [GPlates-discuss] Problem linking raster to polygon file Hi I have a raster image which I need to connect to a reconstructed polygon but every time I try, GPlates freezes. I can make the connection for the same raster with another, simpler raster so I presume that the issue has to do with the polygon shapefile. Further checks demonstrate that the issue only relates to my collection of polygons for Antarctica. Can anybody suggest what I should check for. I have performed a Repair Geometry and Check Geometry in ArcGIS with no issues noted. Regards Bruce Bruce Eglington (Ph.D.) Murray Pyke Chair Geological Sciences University of Saskatchewan 114 Science Place Saskatoon SK S7N 4K8 Canada bruce.eglington at usask.ca +1-306-966-5732 -------------- next part -------------- An HTML attachment was scrubbed... URL: From sabin.zahirovic at sydney.edu.au Wed Oct 19 10:22:22 2016 From: sabin.zahirovic at sydney.edu.au (Sabin Zahirovic) Date: Tue, 18 Oct 2016 23:22:22 +0000 Subject: [GPlates-discuss] Problem linking raster to polygon file In-Reply-To: <4023a4cf7efa4b18aacdbfda07517d7f@Mail01.usask.ca> References: <6F3ED6CD-9729-42BE-ABA5-ED2F3A71C29F@sydney.edu.au> <1E57973145EDFC41B1D69DE1192392280184A80334@ex-mbx-pro-05> <4023a4cf7efa4b18aacdbfda07517d7f@Mail01.usask.ca> Message-ID: <9E2F7F90-B892-4830-801C-F76CF7C536B7@sydney.edu.au> Hi Bruce, Glad the documentation helps. I?ll ask one of our Research Assistants to start a Troubleshooting or FAQ section to the GPlates documentation. I think that might be helpful. Let me know if there?s anything I can help you with. Cheers, Sabin -- DR SABIN ZAHIROVIC | Postdoctoral Research Associate School of Geosciences | Faculty of Science THE UNIVERSITY OF SYDNEY Rm 403, Madsen Building F09 | The University of Sydney | NSW | 2006 M +61 416 775 589 P +61 2 9351 3625 E sabin.zahirovic at sydney.edu.au | W http://www.earthbyte.org | R http://www.researchgate.net/profile/Sabin_Zahirovic F https://www.facebook.com/earthbyte | T https://twitter.com/EarthByteGroup Faculty contact for the Society of Exploration Geophysicists (SEG) - Member # 283117 Most recent publications: Zahirovic, S., Matthews, K.J., Flament, N., M?ller, R.D., Hill, K.C., Seton, M. and Gurnis, M., (In Press), Tectonic evolution and deep mantle structure of the eastern Tethys since the latest Jurassic, Earth Science Reviews, doi: 10.1016/j.earscirev.2016.09.005. Zahirovic, S., N. Flament, R. D. M?ller, M. Seton, and M. Gurnis (In Press), Large fluctuations of shallow seas in low-lying Southeast Asia driven by mantle flow, Geochemistry, Geophysics, Geosystems, doi: 10.1002/2016GC006434. CRICOS 00026A This email plus any attachments to it are confidential. Any unauthorised use is strictly prohibited. If you receive this email in error, please delete it and any attachments. From: GPlates-discuss on behalf of "Eglington, Bruce" Reply-To: GPlates general discussion mailing list Date: Tuesday, 18 October 2016 at 11:55 PM To: GPlates general discussion mailing list Subject: Re: [GPlates-discuss] Problem linking raster to polygon file Hi John and Sabin Thanks for the suggestions and notes. Sabin, if these are not already part of the GPlates documentation, they ought to be. Great job summarizing what to watch out for, even if newer versions of the software will be more tolerant. I am working at isolating the issue, based on your notes and will get back to you. Bruce Bruce Eglington (Ph.D.) Murray Pyke Chair Geological Sciences University of Saskatchewan 114 Science Place Saskatoon SK S7N 4K8 Canada bruce.eglington at usask.ca +1-306-966-5732 From: GPlates-discuss [mailto:gplates-discuss-bounces at mailman.sydney.edu.au] On Behalf Of John Cannon Sent: Monday, October 17, 2016 22:42 To: GPlates general discussion mailing list Subject: Re: [GPlates-discuss] Problem linking raster to polygon file Hi Bruce, Sabin's trouble-shooting article is definitely the way to go for your problem (in GPlates 1.5 and earlier). And, as Sabin mentions, GPlates 2.0 will fix a lot of these problems. And will also support self-intersecting and donut polygons. And will link up much faster (when you connect raster to polygons layer). It will be out November for sure. In the meantime, as Sabin mentioned, if you can isolate one problem polygon then Sabin or I can verify it offline with a pre-2.0 build. Regards, John ________________________________ From: GPlates-discuss [gplates-discuss-bounces at mailman.sydney.edu.au] on behalf of Sabin Zahirovic [sabin.zahirovic at sydney.edu.au] Sent: Tuesday, 18 October 2016 9:39 AM To: GPlates general discussion mailing list Subject: Re: [GPlates-discuss] Problem linking raster to polygon file Hi Bruce, Hope you?ve been well! It could be something to do with the polygons, I?ve had similar issues in the past ? although John has worked really hard on fixing those issues and has immensely improved how GPlates handles certain polygons. As you mention, Repair Geometry in ArcGIS is very helpful as it deleted features with Null geometries, and also fixes self-intersecting polygons. If you have very detailed polygons, say that have points so close to each other that GPlates thinks the polygon is self-intersecting, then this might cause some issues, although John has definitely fixed many aspects of this. Make sure that your polygons don?t have duplicate Feature Ids. This happens when you save out polygons from GPlates, and then cut them into sub-components in ArcGIS, leading to each portion of the polygon having the same Feature ID. Can you confirm that you have the latest version of GPlates (1.5) installed? Also, it might be best to isolate one polygon that triggers the problem, and you can send it to me offline, and I can have a look at it. If it?s to do with the raster, it might be to do with the resolution of the file. I attach an OLD troubleshooting file I wrote up, which was before many of the fixes that John implemented, but it could be worthwhile having a look at some of the issues (especially if your polygons are not WGS84 or might have geometries beyond the geographic range). Cheers, Sabin -- DR SABIN ZAHIROVIC | Postdoctoral Research Associate School of Geosciences | Faculty of Science THE UNIVERSITY OF SYDNEY Rm 403, Madsen Building F09 | The University of Sydney | NSW | 2006 M +61 416 775 589 P +61 2 9351 3625 E sabin.zahirovic at sydney.edu.au | W http://www.earthbyte.org | R http://www.researchgate.net/profile/Sabin_Zahirovic F https://www.facebook.com/earthbyte | T https://twitter.com/EarthByteGroup Faculty contact for the Society of Exploration Geophysicists (SEG) - Member # 283117 Most recent publications: Zahirovic, S., Matthews, K.J., Flament, N., M?ller, R.D., Hill, K.C., Seton, M. and Gurnis, M., (In Press), Tectonic evolution and deep mantle structure of the eastern Tethys since the latest Jurassic, Earth Science Reviews, doi: 10.1016/j.earscirev.2016.09.005. Zahirovic, S., N. Flament, R. D. M?ller, M. Seton, and M. Gurnis (In Press), Large fluctuations of shallow seas in low-lying Southeast Asia driven by mantle flow, Geochemistry, Geophysics, Geosystems, doi: 10.1002/2016GC006434. CRICOS 00026A This email plus any attachments to it are confidential. Any unauthorised use is strictly prohibited. If you receive this email in error, please delete it and any attachments. From: GPlates-discuss > on behalf of "Eglington, Bruce" > Reply-To: GPlates general discussion mailing list > Date: Tuesday, 18 October 2016 at 4:51 AM To: "GPlates general discussion mailing list (gplates-discuss at mail.usyd.edu.au)" > Subject: [GPlates-discuss] Problem linking raster to polygon file Hi I have a raster image which I need to connect to a reconstructed polygon but every time I try, GPlates freezes. I can make the connection for the same raster with another, simpler raster so I presume that the issue has to do with the polygon shapefile. Further checks demonstrate that the issue only relates to my collection of polygons for Antarctica. Can anybody suggest what I should check for. I have performed a Repair Geometry and Check Geometry in ArcGIS with no issues noted. Regards Bruce Bruce Eglington (Ph.D.) Murray Pyke Chair Geological Sciences University of Saskatchewan 114 Science Place Saskatoon SK S7N 4K8 Canada bruce.eglington at usask.ca +1-306-966-5732 -------------- next part -------------- An HTML attachment was scrubbed... URL: