[Qgis-user] Portable GIS
I am trying to create a Portable QGIS to test before an international project I have followed the ideas from ( https://www.sigterritoires.fr/index.php/en/portable-version-of-qgis-3-32-0/) but am not having luck with QGIS running from the USB I had used Portable GIS from OSGeo in the past but the link I had is no longer working Thank you for any ideas/suggestions that anyone has Mike * Michael Jabot, Ph.D. SUNY Distinguished Professor, Science Education US Partner - NASA GLOBE Program NASA Earth Ambassador Director, Institute for Research in Science Teaching Chancellor's Award Recipient for Excellence in Research The State University of New York at Fredonia 716.320-0189 (Google Voice) ja...@fredonia.edu E250 Thompson Hall 280 Central Avenue Fredonia, NY 14063 * ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Square Buffer
Hugh THANK YOU so much!! You were correct about the distortion. When I checked the length of sides with the measure tool (which I didn't do before) it was a square I also switched the coordinate system which also helped THANK YOU again!! Mike * Michael Jabot, Ph.D. SUNY Distinguished Professor, Science Education US Partner - *NASA GLOBE Program* *NASA Earth Ambassador*Director, *Institute for Research in Science Teaching* *Chancellor's Award Recipient for Excellence in Research*The State University of New York at Fredonia 716.320-0189 (Google Voice) ja...@fredonia.edu E250 Thompson Hall 280 Central Avenue Fredonia, NY 14063 * On Sat, Sep 30, 2023 at 2:58 PM Hugh Kelley wrote: > Oops, including the list. > > Also, having now written the response and re-read your question, I would > guess that the coordinate system you are using is causing the distortion > you see in the result. > > I'd be curious to see what others on the list might suggest as the best > option for crs as I think even state plane would be distorted at least a > little. > > ---‐-- > > Hi, not in front of my computer so I can't test but I would recommend > first, creating a round buffer with a diameter equal to the square side you > are looking for, and then second, using the "extent" tool that's in one of > the vector tools subcategories to extract the layer extent, creating the > square you need. > > That should create a "square" although, importantly, the idea of a square > in the gis world is a little fraught as the coordinate system you are using > can sometimes produce odd results. > > I would, at a minimum, use the measure tool to double check that what > looks like a square truly has a height equal to its width. > > On Sat, Sep 30, 2023, 2:39 PM Michael Jabot via QGIS-User < > qgis-user@lists.osgeo.org> wrote: > >> I apologize for posting what I think should be a simple task but I am >> stumped. >> >> I would like to create a 15 km square Buffer around a point for >> establishing a study site. >> >> I have used the buffer tool and set it to square and used 7.5 km as the >> distance. The buffer that is created is not square but instead is a longer >> on one set of sides. >> >> Again I apologize for bothering people with this ... thank you in advance >> for your help >> >> Mike >> >> >> * >> >> Michael Jabot, Ph.D. >> SUNY Distinguished Professor, Science Education >> >> US Partner - NASA GLOBE Program >> >> NASA Earth Ambassador >> Director, Institute for Research in Science Teaching >> >> Chancellor's Award Recipient for Excellence in Research >> The State University of New York at Fredonia >> >> >> 716.320-0189 (Google Voice) >> >> ja...@fredonia.edu >> >> E250 Thompson Hall >> 280 Central Avenue >> >> Fredonia, NY 14063 >> * >> >> >> ___ >> QGIS-User mailing list >> QGIS-User@lists.osgeo.org >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >> > ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Square Buffer
I apologize for posting what I think should be a simple task but I am stumped. I would like to create a 15 km square Buffer around a point for establishing a study site. I have used the buffer tool and set it to square and used 7.5 km as the distance. The buffer that is created is not square but instead is a longer on one set of sides. Again I apologize for bothering people with this ... thank you in advance for your help Mike * Michael Jabot, Ph.D. SUNY Distinguished Professor, Science Education US Partner - NASA GLOBE Program NASA Earth Ambassador Director, Institute for Research in Science Teaching Chancellor's Award Recipient for Excellence in Research The State University of New York at Fredonia 716.320-0189 (Google Voice) ja...@fredonia.edu E250 Thompson Hall 280 Central Avenue Fredonia, NY 14063 * ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Field Names Changed
I apologize for bothering the list with this but I'm stumped. I have imported a .geojson into QGIS and it displays fine. I then exported selected features as a .csv to do some statistical analysis and this worked fine and the Field Names in the .csv are correct. But when I open the Attribute Table of the.geojson the Field Names in QGIS the Field Names are not the same. There is a correct number of fields for each of the categories, but the Field Names are changed. I'm stumped. I am using 3.18.2 Thank you in advance for any help you can offer. Mike * Michael Jabot, Ph.D. SUNY Distinguished Professor, Science Education US Partner - GLOBE Program NASA Earth Ambassador Director, Institute for Research in Science Teaching Chancellor's Award Recipient for Excellence in Research The State University of New York at Fredonia 716.320-0189 (Google Voice) ja...@fredonia.edu E250 Thompson Hall 280 Central Avenue Fredonia, NY 14063 * ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Creating Rectangle Around Central Point
Good Morning I am trying to create a square 1km X 1km around a central point that has GPS coordinates. I have tried every suggestion and plugin suggested but am struggling. This is intended to be used with students as part of their science field work once I figure out what I am doing wrong. Thank you in advance for your help. Mike Jabot * Michael Jabot, Ph.D. SUNY Distinguished Professor, Science Education US Partner - GLOBE Program NASA Earth Ambassador Director, Institute for Research in Science Teaching Chancellor's Award Recipient for Excellence in Research The State University of New York at Fredonia 716.320-0189 (Google Voice) ja...@fredonia.edu E250 Thompson Hall 280 Central Avenue Fredonia, NY 14063 * ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] problems reprojecting in equal earth
Nicolas THANK YOU so much!!! What an INCREDIBLE community!!! With deepest appreciation!! Mike * Michael Jabot, Ph.D. Professor, Science Education US Partner - *GLOBE Program* *NASA Earth Ambassador*Director, *Institute for Research in Science Teaching* *Chancellor's Award Recipient for Excellence in Research*The State University of New York at Fredonia 716.320-0189 (Google Voice) ja...@fredonia.edu E250 Thompson Hall 280 Central Avenue Fredonia, NY 14063 * On Wed, Aug 21, 2019 at 8:52 PM Nicolas Cadieux < nicolas.cadi...@archeotec.ca> wrote: > Hi, > > I figured it out! (Well... you figured it out:) I created a world grid > with 1 degree longitudes. I then densified this grid with the value 10 > 000 (Vector/Geometry tools/densify by count). Then, I selected the > longitude line I wanted to split (-44). I then used the Split with lines > found in processing. Reprojection still gave me those big polygons but > this time, you can select them by clicking slightly right of the > polygons (on the right side of the screen) on the reprojected project. > Then, you can delete the problematic polygons. Results are in the > Google Drive. > > https://drive.google.com/open?id=1eL6ws8Jc-PugMM2gxV79j0k-TGoWcw6B > > Thanks for your help! > > Nicolas > > On 2019-08-21 3:26 p.m., Alex M wrote: > > I had this issue once also, I think the clipping method is the most > > reliable. If I recall the odd/invalid polygons depended on which scale > > of Natural Earth you use. Try downloading a different scale. I remember > > actually trying to fix the polygons and Russia was just too complicated > > to deal with at the time. > > > > This is a common problem anytime you wrap the dateline with world data, > > and you might find more solutions using those search terms. > > > > Thanks, > > Alex > > > > On 8/21/19 11:10, Nicolas Cadieux wrote: > >> Good idea Calvin, > >> Anyone else with a simpler, faster solution? If not, I will try. > >> Nicolas > >> > >>> Le 21 août 2019 à 13:43, C Hamilton a écrit : > >>> > >>> The way I more or less solved something like this was by pre-clipping > the Natural Earth data at the boundaries of the projection and made two > different vector layers You then will not get the wrap around. If need be > you can shift the longitude of one of layers by 180 degrees and then > attempt to merge the two pieces together. For countries that now have a cut > line down the middle you can then merge the pieces together. It can be time > consuming, but will work. I don't know if there is an easier way. > >>> > >>> Calvin > >>> > >>>> On Wed, Aug 21, 2019 at 1:17 PM Nicolas Cadieux < > nicolas.cadi...@archeotec.ca> wrote: > >>>> Hi, > >>>> > >>>> These are the nasty polygons. I am hoping you will see the image. > >>>> > >>>> > >>>> > >>>>> On 2019-08-19 12:26 p.m., Nicolas Cadieux wrote: > >>>>> Hi, > >>>>> > >>>>> Trying to help another Qgis user that posted earlier. > >>>>> > >>>>> We have Natural Earth vectorial Data that we what to reproject in > Equal Earth. We want Austria to be in the middle of the map so we created > a Equal Earth Project using custom CRS using +proj=eqearth +datum=WGS84 > +wktext +lon_0=136 with the help of > https://proj.org/operations/projections/eqearth.html. Using lon_0=136 > puts Australia in the middle and limits the distortion in that longitude. > >>>>> > >>>>> Data was reprojected and saved in the new projection (vector/Data > Management tools/Reproject Layer). Project is also in the Equal Earth > projection so no reprojection on the fly is happening behind the scenes. > >>>>> > >>>>> Question: How so we take care of the nasty polygons that appear when > we add the "+lon_0=136" parameter? See the zip. > >>>>> > >>>>> You can find the data here: > https://drive.google.com/open?id=1eL6ws8Jc-PugMM2gxV79j0k-TGoWcw6B > >>>>> > >>>>> Qgis 3.8.1 on Windows 10_64 > >>>>> > >>>>> Thanks > >>>>> > >>>>> Nicolas > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> ___ > >>>>> Qgis-user mailing list > &
[Qgis-user] Re-centering Map projection
I would like to use the Equal Earth projection for a series of activities for schools. What I would like to do is to recenter the map as we move from continent to continent as a focus. I have tried a number of things but have not had any success. Thank you in advance for any help anyone can offer Mike * Michael Jabot, Ph.D. Professor, Science Education US Partner - *GLOBE Program* *NASA Earth Ambassador*Director, *Institute for Research in Science Teaching* *Chancellor's Award Recipient for Excellence in Research*The State University of New York at Fredonia 716.320-0189 (Google Voice) ja...@fredonia.edu E250 Thompson Hall 280 Central Avenue Fredonia, NY 14063 * ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Splitting Polygon
Hello I am trying to divide a watershed into two zones by a road crossing. I have both in a shape file and the road intersects the boundary. I have tried several different ways to split the polygon but have failed all around. Thank you in advance for any help you can offer Mike -- ** Michael Jabot, Ph.D. Professor, Science Education US Partner - GLOBE Program NASA Earth Ambassador Director, Institute for Research in Science Teaching State University of New York at Fredonia E250 Thompson Hall Fredonia, NY 14063 716.320-0189 (Google Voice) ja...@fredonia.edu ** ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] QGIS 3.X on Chromebook
I am trying to help a set of teachers that would like to run QGIS on Chromebooks. We were able to install 2.14 but would like to be able to run 3.X. The installation runs from the Linux terminal. Has anyone had any luck doing this? Thank you in advance for any help you can offer. Mike Jabot -- ** Michael Jabot, Ph.D. Professor, Science Education US Partner - GLOBE Program NASA Earth Ambassador Director, Institute for Research in Science Teaching State University of New York at Fredonia E250 Thompson Hall Fredonia, NY 14063 716.320-0189 (Google Voice) ja...@fredonia.edu ** ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Mask Plugin
I apologize for bothering the list but I am struggling using the Mask Plugin. I am using 3.6.0 and the mask plugin does not seem to enable. I would like to use the mask plugin to clip a basemap to a data frame I have tried uninstalling and reinstalling but my issue persists Thank you in advance for any ideas and help that anyone can offer. Mike Jabot * Michael Jabot, Ph.D. Professor, Science Education US Partner - *GLOBE Program* *NASA Earth Ambassador*Director, *Institute for Research in Science Teaching* The State University of New York at Fredonia 716.320-0189 (Google Voice) ja...@fredonia.edu E250 Thompson Hall 280 Central Avenue Fredonia, NY 14063 * ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Layout question
I have been using the Equal Earth projection for an example for schools. Is there a way in QGIS to shift the view so that a particular polygon of interest is centered in the layout? What I am trying to do is get a “head onto view” of this polygon instead of having it skewed. I tried rotation but it rotated along the wrong axis Thank you for any ideas and again I apologize for these dumb questions Mike -- ** Michael Jabot, Ph.D. Professor, Science Education US Partner - GLOBE Program NASA Earth Ambassador Director, Institute for Research in Science Teaching State University of New York at Fredonia E250 Thompson Hall Fredonia, NY 14063 716.320-0189 (Google Voice) ja...@fredonia.edu ** ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Clipping basemap
I am trying to clip a basemap to a polygon and am struggling. I have tried to follow suggestions from others about doing this but have not been able to make it work. What I am trying to do is use the portion of the basemap for the region in Composer Thank you in advance for any suggestions Mike Jabot * Michael Jabot, Ph.D. Professor, Science Education US Partner - *GLOBE Program* *NASA Earth Ambassador*Director, *Institute for Research in Science Teaching* The State University of New York at Fredonia 716.320-0189 (Google Voice) ja...@fredonia.edu E250 Thompson Hall 280 Central Avenue Fredonia, NY 14063 * ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Help with Rectangles Ovals Digitizing plugin
Hello I would like to be able to create simple polygons of fixed dimensions that I can then clip imagery to. Ideally I would be able to center these over a location to create a boundary map for the imagery. This is for use by P-12 students and their teachers. I have installed the rectangles ovals digitizing plugin but am having no luck. Does anyone have any suggestions. Thank you in advance for any help you can offer and I apologize for bothering the list with this Mike ** Michael Jabot, Ph.D. Professor, Science Education US Partner - *GLOBE Program* *NASA Earth Ambassador*Director, *Institute for Research in Science Teaching* State University of New York at Fredonia E250 Thompson Hall Fredonia, NY 14063 716.320-0189 (Google Voice) ja...@fredonia.edu ** ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Hot Spot Plugin
Stefan I apologize. Yes 2.14.14 was the version of QGIS This is a screenshot of the error [image: Inline image 1] Thank you again for any ideas Mike ** Michael Jabot, Ph.D. Professor, Science Education US Partner - *GLOBE Program* *NASA Earth Ambassador*Director, *Institute for Research in Science Teaching* State University of New York at Fredonia E250 Thompson Hall Fredonia, NY 14063 716.320-0189 (Google Voice) ja...@fredonia.edu ** On Thu, Jun 8, 2017 at 8:59 AM, Stefan Kiefer <st_kie...@web.de> wrote: > Hi Mike, > you should provide a bit more details about the error (best would be to > paste the whole Message, or at least the significant part), and maybe which > Version of the Plugin you use (I believe 2.14.14 ist the version of qgis). > And best you describe what you have done. > > Cheers. > > Stefan > > Michael Jabot <michael.ja...@fredonia.edu> hat am 8. Juni 2017 um 13:07 > geschrieben: > > > > > > Hello > > > > I am trying to do some analysis and would like to use Hotspot analysis. > The > > plugin gives me an error message (I am running 2.14.14) > > > > Any suggestions would be welcome > > > > Thank you in advance > > > > Mike Jabot > > > > ** > > Michael Jabot, Ph.D. > > Professor, Science Education > > US Partner - *GLOBE Program* > > > > *NASA Earth Ambassador*Director, *Institute for Research in Science > > Teaching* > > State University of New York at Fredonia > > E250 Thompson Hall > > Fredonia, NY 14063 > > 716.320-0189 (Google Voice) > > ja...@fredonia.edu > > > > ** > > ___ > > Qgis-user mailing list > > Qgis-user@lists.osgeo.org > > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Hot Spot Plugin
Hello I am trying to do some analysis and would like to use Hotspot analysis. The plugin gives me an error message (I am running 2.14.14) Any suggestions would be welcome Thank you in advance Mike Jabot ** Michael Jabot, Ph.D. Professor, Science Education US Partner - *GLOBE Program* *NASA Earth Ambassador*Director, *Institute for Research in Science Teaching* State University of New York at Fredonia E250 Thompson Hall Fredonia, NY 14063 716.320-0189 (Google Voice) ja...@fredonia.edu ** ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Raster Extent After Clipping
I apologize for bothering the list with this but I am stuck. I have clipped a raster to a .shp file successfully but can not get the extent of the clip to match the dimensions of the .shp file. Any suggestions to what I am doing wrong would be greatly appreciated. Again I apologize for bothering the list with this foolish question. Mike ** Michael Jabot, Ph.D. Professor, Science Education US Partner - *GLOBE Program* *NASA Earth Ambassador*Director, *Institute for Research in Science Teaching* State University of New York at Fredonia E250 Thompson Hall Fredonia, NY 14063 716.320-0189 (Google Voice) ja...@fredonia.edu ** ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Limiting File Choices
I am working with elementary students in using QGIS to develop spatial reasoning. I have created .shp files for them to use but when they go to the folder to add the .shp, all the supporting files are also present, so we are struggling. Is there a way to set the settings so that only the .shp appears as an option to them? Thank you in advance for your help and I apologize if this is a silly question Mike Jabot ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
