Re: [Qgis-user] check for coordinates in an attribute table for shapefile layer
Dear Maria, OK, I understand. So you have to do the reverse: update your shapefile geometries with the erroneous updated coordinates in the attribute table. Like Nicholas, I supposed you have to handle point data. You can transfer the coordinates from your table to your geometries with copy and paste. Either you still remember the entries on which you have applied changes to or you may calculate the differences between actual values (geometries) and desired values (attribute table) in new columns of your table to systematically identify them Set your point layer to edit mode (toggle editing), the digitizing toolbar should be visible. Select the point you want to apply an update with a right mouse click and the vertex editor appears. There you can transfer your desired coordinates with copy and paste. Up to now I don't know an easy method to update the actual geometry with values in the attribute table automatically (only the reverse). If you are stuck, consider to contact Nicolas via zoom. Regards, Christine Gesendet: Montag, 31. Januar 2022 um 09:48 Uhr Von: "Maria Shinoto" An: "geo.gu...@web.de" Betreff: Re: [Qgis-user] check for coordinates in an attribute table for shapefile layer Dear Christine, Thank you for your immediate help. I thought of exporting an importing in the worst case. Since I have already prepared a map / print layout with lots of individual positioning of point labels, I wanted to avoid it if possible. I now had a look on the geometry tools. Thanks a lot, Maria > Am 31.01.2022 um 17:22 schrieb geo.gu...@web.de: > > Dear Maria, > > if you export your shapefile to csv and reimport it in QGIS with your X and Y values as the valid coordinates again, your problem should be solved. > > It's possible and better to edit the geometry directly with the geometry tools. > > Regards, Christine > > > Gesendet: Montag, 31. Januar 2022 um 09:03 Uhr > Von: "Maria Shinoto" > An: qgis-user@lists.osgeo.org > Betreff: [Qgis-user] check for coordinates in an attribute table for shapefile layer > Hi, > > I imported a .csv file with about 100 datasets and created a shapefile layer from the X and Y data. > > Then I did something stupid. I deleted some duplicates and changed the X and Y data slightly in three or four data sets, and I created a new row with one new data point and X and Y data. > > What I did no realize is that the data in X and Y will not be accepted automatically as geo coordinates. > > Now I have a map without the full set of points, and I do not know the following: > > 1. How do I check quickly, which rows need ne geocoordinates from the X and Y columns? > > 2. When I figured which data set need updates, how do get the X and Y data into their geocoordinates and get them shown on the map. > > Thanks, > Maria > > ___ > 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
Re: [Qgis-user] check for coordinates in an attribute table for shapefile layer
Hi, See below Nicolas Cadieux https://gitlab.com/njacadieux > Le 31 janv. 2022 à 03:09, Maria Shinoto > a écrit : > > Hi, > > I imported a .csv file with about 100 datasets and created a shapefile layer > from the X and Y data. By « dataset » I imagine you mean object like line, polygon and points? Since you only talk about x and y, I take for granted that you are talking about points. Do you still have the original .csv file? That would be useful. > > Then I did something stupid. I deleted some duplicates and changed the X and > Y data slightly in three or four data sets, and I created a new row with one > new data point and X and Y data. I guess you moved some points around in the .shp file, created a new x and y and updated the geometry from the new x and y? Can you use the same steps and update the geometry from the original x and y or did these disappear when you created the shape file? > > What I did no realize is that the data in X and Y will not be accepted > automatically as geo coordinates. > > Now I have a map without the full set of points, and I do not know the > following: > >1. How do I check quickly, which rows need ne geocoordinates from the X > and Y columns? If you have the original csv, you can use that remake the ordinal file, then, in the vector menu, you can substrat (difference I think, I’am not in front of a computer) one vector file from the other. The difference between both files will indicate what changed. You can also regenerate the new x and y fields (like testY and testY) using the field calculator and $x and $y functions. If you don’t have geometries, then those field will come up as empty. > >2. When I figured which data set need updates, how do get the X and Y data > into their geocoordinates and get them shown on the map. > > Thanks, > Maria > I you are still stuck, we could zoom. I am in Montreal time. Nicolas > ___ > 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
Re: [Qgis-user] check for coordinates in an attribute table for shapefile layer
Dear Maria, if you export your shapefile to csv and reimport it in QGIS with your X and Y values as the valid coordinates again, your problem should be solved. It's possible and better to edit the geometry directly with the geometry tools. Regards, Christine Gesendet: Montag, 31. Januar 2022 um 09:03 Uhr Von: "Maria Shinoto" An: qgis-user@lists.osgeo.org Betreff: [Qgis-user] check for coordinates in an attribute table for shapefile layer Hi, I imported a .csv file with about 100 datasets and created a shapefile layer from the X and Y data. Then I did something stupid. I deleted some duplicates and changed the X and Y data slightly in three or four data sets, and I created a new row with one new data point and X and Y data. What I did no realize is that the data in X and Y will not be accepted automatically as geo coordinates. Now I have a map without the full set of points, and I do not know the following: 1. How do I check quickly, which rows need ne geocoordinates from the X and Y columns? 2. When I figured which data set need updates, how do get the X and Y data into their geocoordinates and get them shown on the map. Thanks, Maria ___ 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] check for coordinates in an attribute table for shapefile layer
Hi, I imported a .csv file with about 100 datasets and created a shapefile layer from the X and Y data. Then I did something stupid. I deleted some duplicates and changed the X and Y data slightly in three or four data sets, and I created a new row with one new data point and X and Y data. What I did no realize is that the data in X and Y will not be accepted automatically as geo coordinates. Now I have a map without the full set of points, and I do not know the following: 1. How do I check quickly, which rows need ne geocoordinates from the X and Y columns? 2. When I figured which data set need updates, how do get the X and Y data into their geocoordinates and get them shown on the map. Thanks, Maria ___ 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
