Re: [Qgis-user] Edit attribute table rows
Hi all, Thanks for the pointers. I finally ended up just recoding the Python script to fill the data in. Useful to know there are alternative routes when working on databases. Cheers Lester On 8 April 2016 at 19:34, Micha Silver wrote: > Here's a way to accomplish what you want in a Spatialite table > > I saved your sample 4 rows as a CSV: > > row_id,strike,dip,rake,magnitude,quadrant,depth > 0,Tensional and Compressional, > 1,233,38,-96,6.77,Compressional,623 > 2,Tensional and Compressional, > 3,68,36,83,5.7,Compressional,39 > > Then I imported the CSV to Spatialite_gui and ran this query: > > UPDATE earthquakes SET depth=(SELECT e.depth FROM earthquakes AS e WHERE > e.rowid=(earthquakes.rowid+1)) > WHERE depth IS NULL; > > Then I got: > 000NULLNULLNULLNULLTensional and Compressional > 623 > 11123338-966.77Compressional623 > 222NULLNULLNULLNULLTensional and Compressional > 39 > 3336836835.70Compressional 39 > > HTH, > Micha > > -- Original Message -- Subject: Re: [Qgis-user] Edit attribute table > rows Date: Fri, 8 Apr 2016 17:17:09 +0100 To: Andreas Neumann, Qgis-user > From: Lester Anderson > > > On 04/08/2016 07:17 PM, Lester Anderson wrote: > > Hi Andreas, > > Still having issues. I can see the logic of the CASE WHEN END, but I > am wondering if the problem is because "Depth" has both a NULL value > and a real value. I have tried all sorts of variants and cannot get > the NULL depth changed. > > Attributes: strike dip rake magnitude quadrant depth > 0 null null null null null "Tensional and compressional" null > 1 233 38 -96 6.77 Compressional 623 > > So scanning for Depth=NULL is fine; this is actually all of the event > solutions, where the row with the values defines the nodal planes. I > have around 2928 events in the shapefile! > > Can this be solved by scanning for the quadrant attribute, but then > how does one specify the value for "Depth". I think if one applies > "Depth" NOT NULL it returns 1 > > I could not find a guide in the documentation for the field calculator > that was similar. > > Cheers > Lester > > On 8 April 2016 at 15:00, Neumann, Andreas wrote: > > Hi Lester, > > The field calculator is meant to change "a lot" of values. It will update > all selected records with the new value or calculation (expression). > > With CASE WHEN END you can introduce switches for different rules. > > So - please don't export to Excel. You can do it all with the field > calculator. > > Andreas > > On 2016-04-08 15:28, Lester Anderson wrote: > > Hi Andreas, > > I am trying change a lot of values, if it was a few that is no problem. > > The other option is to export the attribute table as a database and > edit in Excel etc and then join the table in QGIS > > Cheers > Lester > > On 8 April 2016 at 14:23, Neumann, Andreas wrote: > > Hi Lester, > > I thought you want to set the value to 623 where the value was NULL before? > - so just write 623 in the left field after you selected the values. > > Alternatively, you can do without the previous selection and use the > following expression. > > CASE WHEN depth IS NULL THEN 623 ELSE depth END > > Hope this helps, > > Andreas > > > > On 2016-04-08 15:13, Lester Anderson wrote: > > Hello Andreas, > > Selecting the rows where depth = NULL is fine. The field calculator > does not update the depth with the depth where known values are > present. > > Only update selected features is checked, update existing field > checked, with output field set to depth: > Expression: tried just "depth" and also "depth"="depth". > > Have I missed something here? > > Thanks > > On 8 April 2016 at 12:30, Neumann, Andreas wrote: > > Sure. > > It is a two-step thing: > > 1. Select all records where Depth IS NULL. Use the "Select Features using an > expression" button (the Epsilon sign) for that and "depth IS NULL" as an > expression > > 2. Use the field calculator and only update the selected records (the top > checkbox in the field calculator). > > You can find details about the field calculator in the QGIS manual. > > Hope this helps, > > Andreas > > On 2016-04-08 13:18, Lester Anderson wrote: > > Hello, > > I have an attribute table of earthquake data (focal mechanism beach > balls) and need to edit the depth attribute. Each ball is defined by > two rows in the table, eg first ball > >
Re: [Qgis-user] Edit attribute table rows
Here's a way to accomplish what you want in a Spatialite table I saved your sample 4 rows as a CSV: row_id,strike,dip,rake,magnitude,quadrant,depth 0,Tensional and Compressional, 1,233,38,-96,6.77,Compressional,623 2,Tensional and Compressional, 3,68,36,83,5.7,Compressional,39 Then I imported the CSV to Spatialite_gui and ran this query: UPDATE earthquakes SET depth=(SELECT e.depth FROM earthquakes AS e WHERE e.rowid=(earthquakes.rowid+1)) WHERE depth IS NULL; Then I got: 0 0 0 NULL NULL NULL NULL Tensional and Compressional 623 1 1 1 233 38 -96 6.77 Compressional 623 2 2 2 NULL NULL NULL NULL Tensional and Compressional 39 3 3 3 68 36 83 5.70 Compressional 39 HTH, Micha -- Original Message -- Subject: Re: [Qgis-user] Edit attribute table rows Date: Fri, 8 Apr 2016 17:17:09 +0100 To: Andreas Neumann, Qgis-user From: Lester Anderson On 04/08/2016 07:17 PM, Lester Anderson wrote: Hi Andreas, Still having issues. I can see the logic of the CASE WHEN END, but I am wondering if the problem is because "Depth" has both a NULL value and a real value. I have tried all sorts of variants and cannot get the NULL depth changed. Attributes: strike dip rake magnitude quadrant depth 0 null null null null null "Tensional and compressional" null 1 233 38 -96 6.77 Compressional 623 So scanning for Depth=NULL is fine; this is actually all of the event solutions, where the row with the values defines the nodal planes. I have around 2928 events in the shapefile! Can this be solved by scanning for the quadrant attribute, but then how does one specify the value for "Depth". I think if one applies "Depth" NOT NULL it returns 1 I could not find a guide in the documentation for the field calculator that was similar. Cheers Lester On 8 April 2016 at 15:00, Neumann, Andreas wrote: Hi Lester, The field calculator is meant to change "a lot" of values. It will update all selected records with the new value or calculation (_expression_). With CASE WHEN END you can introduce switches for different rules. So - please don't export to Excel. You can do it all with the field calculator. Andreas On 2016-04-08 15:28, Lester Anderson wrote: Hi Andreas, I am trying change a lot of values, if it was a few that is no problem. The other option is to export the attribute table as a database and edit in Excel etc and then join the table in QGIS Cheers Lester On 8 April 2016 at 14:23, Neumann, Andreas wrote: Hi Lester, I thought you want to set the value to 623 where the value was NULL before? - so just write 623 in the left field after you selected the values. Alternatively, you can do without the previous selection and use the following _expression_. CASE WHEN depth IS NULL THEN 623 ELSE depth END Hope this helps, Andreas On 2016-04-08 15:13, Lester Anderson wrote: Hello Andreas, Selecting the rows where depth = NULL is fine. The field calculator does not update the depth with the depth where known values are present. Only update selected features is checked, update existing field checked, with output field set to depth: _expression_: tried just "depth" and also "depth"="depth". Have I missed something here? Thanks On 8 April 2016 at 12:30, Neumann, Andreas wrote: Sure. It is a two-step thing: 1. Select all records where Depth IS NULL. Use the "Select Features using an _expression_" button (the Epsilon sign) for that and "depth IS NULL" as an _expression_ 2. Use the field calculator and only update the selected records (the top checkbox in the field calculator). You can find details about the field calculator in the QGIS manual. Hope this helps, Andreas On 2016-04-08 13:18, Lester Anderson wrote: Hello, I have an attribute table of earthquake data (focal mechanism beach balls) and need to edit the depth attribute. Each ball is defined by two rows in the table, eg first ball Row_ID Strike Dip Rake Magnitude Quadrant Depth -- 0 NULL NULL NULL NULL Tensional and Compressional NULL 1 233 38 -96 6.77 Compressional 623 2 NULL NULL NULL NULL Tensional and Compressional NULL 3 68 36 83 5.7 Compressional 39 etc where rows 0,1 and 2,3 represent separate beach balls, so basically it is a row calculation What I need to do is replace the Depth NULL value with the depth 623 etc for each entry. Is there an easy way of doing this? Thanks Lester ___
Re: [Qgis-user] Edit attribute table rows
On 04/08/2016 04:18 AM, Lester Anderson wrote: > Hello, > > I have an attribute table of earthquake data (focal mechanism beach > balls) and need to edit the depth attribute. Each ball is defined by > two rows in the table, eg first ball > > Row_ID Strike Dip Rake Magnitude Quadrant Depth > -- > 0 NULL NULL NULL NULL Tensional and Compressional NULL > 1 233 38 -96 6.77 Compressional 623 > 2 NULL NULL NULL NULL Tensional and Compressional NULL > 3 68 36 83 5.7 Compressional 39 > etc I'm probably completely misunderstanding your question but here goes... So are you saying you want the Depth for row 0 set to 623 and the Depth for row 2 set to 39? Is there geometry connected to each row? If not rows 0 and 2 don't seem to have useful information? I'm definitely not any kind of database expert but isn't it a no no to have multiple rows represent one thing? Wouldn't they normally be in two tables and a join used to describe the whole object? I would be tempted to put rows 0,2, etc. into one table and 1,3, etc. into another and join but the only key would seem to be the rowid so I'm at a loss. > > where rows 0,1 and 2,3 represent separate beach balls, so basically it > is a row calculation > > What I need to do is replace the Depth NULL value with the depth 623 > etc for each entry. Is there an easy way of doing this? > > Thanks > > Lester > ___ > 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 ___ 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
Re: [Qgis-user] Edit attribute table rows
Hi Andreas, Still having issues. I can see the logic of the CASE WHEN END, but I am wondering if the problem is because "Depth" has both a NULL value and a real value. I have tried all sorts of variants and cannot get the NULL depth changed. Attributes: strike dip rake magnitude quadrant depth 0 null null null null null "Tensional and compressional" null 1 233 38 -96 6.77 Compressional 623 So scanning for Depth=NULL is fine; this is actually all of the event solutions, where the row with the values defines the nodal planes. I have around 2928 events in the shapefile! Can this be solved by scanning for the quadrant attribute, but then how does one specify the value for "Depth". I think if one applies "Depth" NOT NULL it returns 1 I could not find a guide in the documentation for the field calculator that was similar. Cheers Lester On 8 April 2016 at 15:00, Neumann, Andreas wrote: > Hi Lester, > > The field calculator is meant to change "a lot" of values. It will update > all selected records with the new value or calculation (expression). > > With CASE WHEN END you can introduce switches for different rules. > > So - please don't export to Excel. You can do it all with the field > calculator. > > Andreas > > On 2016-04-08 15:28, Lester Anderson wrote: > > Hi Andreas, > > I am trying change a lot of values, if it was a few that is no problem. > > The other option is to export the attribute table as a database and > edit in Excel etc and then join the table in QGIS > > Cheers > Lester > > On 8 April 2016 at 14:23, Neumann, Andreas wrote: > > Hi Lester, > > I thought you want to set the value to 623 where the value was NULL before? > - so just write 623 in the left field after you selected the values. > > Alternatively, you can do without the previous selection and use the > following expression. > > CASE WHEN depth IS NULL THEN 623 ELSE depth END > > Hope this helps, > > Andreas > > > > On 2016-04-08 15:13, Lester Anderson wrote: > > Hello Andreas, > > Selecting the rows where depth = NULL is fine. The field calculator > does not update the depth with the depth where known values are > present. > > Only update selected features is checked, update existing field > checked, with output field set to depth: > Expression: tried just "depth" and also "depth"="depth". > > Have I missed something here? > > Thanks > > On 8 April 2016 at 12:30, Neumann, Andreas wrote: > > Sure. > > It is a two-step thing: > > 1. Select all records where Depth IS NULL. Use the "Select Features using an > expression" button (the Epsilon sign) for that and "depth IS NULL" as an > expression > > 2. Use the field calculator and only update the selected records (the top > checkbox in the field calculator). > > You can find details about the field calculator in the QGIS manual. > > Hope this helps, > > Andreas > > On 2016-04-08 13:18, Lester Anderson wrote: > > Hello, > > I have an attribute table of earthquake data (focal mechanism beach > balls) and need to edit the depth attribute. Each ball is defined by > two rows in the table, eg first ball > > Row_ID Strike Dip Rake Magnitude Quadrant Depth > -- > 0 NULL NULL NULL NULL Tensional and Compressional NULL > 1 233 38 -96 6.77 Compressional 623 > 2 NULL NULL NULL NULL Tensional and Compressional NULL > 3 68 36 83 5.7 Compressional 39 > etc > > where rows 0,1 and 2,3 represent separate beach balls, so basically it > is a row calculation > > What I need to do is replace the Depth NULL value with the depth 623 > etc for each entry. Is there an easy way of doing this? > > Thanks > > Lester > ___ > 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 > > > > > > > > > > ___ 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
Re: [Qgis-user] Edit attribute table rows
Hi Lester, The field calculator is meant to change "a lot" of values. It will update all selected records with the new value or calculation (expression). With CASE WHEN END you can introduce switches for different rules. So - please don't export to Excel. You can do it all with the field calculator. Andreas On 2016-04-08 15:28, Lester Anderson wrote: > Hi Andreas, > > I am trying change a lot of values, if it was a few that is no problem. > > The other option is to export the attribute table as a database and > edit in Excel etc and then join the table in QGIS > > Cheers > Lester > > On 8 April 2016 at 14:23, Neumann, Andreas wrote: > >> Hi Lester, >> >> I thought you want to set the value to 623 where the value was NULL before? >> - so just write 623 in the left field after you selected the values. >> >> Alternatively, you can do without the previous selection and use the >> following expression. >> >> CASE WHEN depth IS NULL THEN 623 ELSE depth END >> >> Hope this helps, >> >> Andreas >> >> On 2016-04-08 15:13, Lester Anderson wrote: >> >> Hello Andreas, >> >> Selecting the rows where depth = NULL is fine. The field calculator >> does not update the depth with the depth where known values are >> present. >> >> Only update selected features is checked, update existing field >> checked, with output field set to depth: >> Expression: tried just "depth" and also "depth"="depth". >> >> Have I missed something here? >> >> Thanks >> >> On 8 April 2016 at 12:30, Neumann, Andreas wrote: >> >> Sure. >> >> It is a two-step thing: >> >> 1. Select all records where Depth IS NULL. Use the "Select Features using an >> expression" button (the Epsilon sign) for that and "depth IS NULL" as an >> expression >> >> 2. Use the field calculator and only update the selected records (the top >> checkbox in the field calculator). >> >> You can find details about the field calculator in the QGIS manual. >> >> Hope this helps, >> >> Andreas >> >> On 2016-04-08 13:18, Lester Anderson wrote: >> >> Hello, >> >> I have an attribute table of earthquake data (focal mechanism beach >> balls) and need to edit the depth attribute. Each ball is defined by >> two rows in the table, eg first ball >> >> Row_ID Strike Dip Rake Magnitude Quadrant Depth >> -- >> 0 NULL NULL NULL NULL Tensional and Compressional NULL >> 1 233 38 -96 6.77 Compressional 623 >> 2 NULL NULL NULL NULL Tensional and Compressional NULL >> 3 68 36 83 5.7 Compressional 39 >> etc >> >> where rows 0,1 and 2,3 represent separate beach balls, so basically it >> is a row calculation >> >> What I need to do is replace the Depth NULL value with the depth 623 >> etc for each entry. Is there an easy way of doing this? >> >> Thanks >> >> Lester >> ___ >> 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 ___ 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
Re: [Qgis-user] Edit attribute table rows
Hi Andreas, I am trying change a lot of values, if it was a few that is no problem. The other option is to export the attribute table as a database and edit in Excel etc and then join the table in QGIS Cheers Lester On 8 April 2016 at 14:23, Neumann, Andreas wrote: > Hi Lester, > > I thought you want to set the value to 623 where the value was NULL before? > - so just write 623 in the left field after you selected the values. > > Alternatively, you can do without the previous selection and use the > following expression. > > CASE WHEN depth IS NULL THEN 623 ELSE depth END > > Hope this helps, > > Andreas > > > > On 2016-04-08 15:13, Lester Anderson wrote: > > Hello Andreas, > > Selecting the rows where depth = NULL is fine. The field calculator > does not update the depth with the depth where known values are > present. > > Only update selected features is checked, update existing field > checked, with output field set to depth: > Expression: tried just "depth" and also "depth"="depth". > > Have I missed something here? > > Thanks > > On 8 April 2016 at 12:30, Neumann, Andreas wrote: > > Sure. > > It is a two-step thing: > > 1. Select all records where Depth IS NULL. Use the "Select Features using an > expression" button (the Epsilon sign) for that and "depth IS NULL" as an > expression > > 2. Use the field calculator and only update the selected records (the top > checkbox in the field calculator). > > You can find details about the field calculator in the QGIS manual. > > Hope this helps, > > Andreas > > On 2016-04-08 13:18, Lester Anderson wrote: > > Hello, > > I have an attribute table of earthquake data (focal mechanism beach > balls) and need to edit the depth attribute. Each ball is defined by > two rows in the table, eg first ball > > Row_ID Strike Dip Rake Magnitude Quadrant Depth > -- > 0 NULL NULL NULL NULL Tensional and Compressional NULL > 1 233 38 -96 6.77 Compressional 623 > 2 NULL NULL NULL NULL Tensional and Compressional NULL > 3 68 36 83 5.7 Compressional 39 > etc > > where rows 0,1 and 2,3 represent separate beach balls, so basically it > is a row calculation > > What I need to do is replace the Depth NULL value with the depth 623 > etc for each entry. Is there an easy way of doing this? > > Thanks > > Lester > ___ > 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 > > > > > > > ___ 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
Re: [Qgis-user] Edit attribute table rows
Hi Lester, I thought you want to set the value to 623 where the value was NULL before? - so just write 623 in the left field after you selected the values. Alternatively, you can do without the previous selection and use the following expression. CASE WHEN depth IS NULL THEN 623 ELSE depth END Hope this helps, Andreas On 2016-04-08 15:13, Lester Anderson wrote: > Hello Andreas, > > Selecting the rows where depth = NULL is fine. The field calculator > does not update the depth with the depth where known values are > present. > > Only update selected features is checked, update existing field > checked, with output field set to depth: > Expression: tried just "depth" and also "depth"="depth". > > Have I missed something here? > > Thanks > > On 8 April 2016 at 12:30, Neumann, Andreas wrote: > >> Sure. >> >> It is a two-step thing: >> >> 1. Select all records where Depth IS NULL. Use the "Select Features using an >> expression" button (the Epsilon sign) for that and "depth IS NULL" as an >> expression >> >> 2. Use the field calculator and only update the selected records (the top >> checkbox in the field calculator). >> >> You can find details about the field calculator in the QGIS manual. >> >> Hope this helps, >> >> Andreas >> >> On 2016-04-08 13:18, Lester Anderson wrote: >> >> Hello, >> >> I have an attribute table of earthquake data (focal mechanism beach >> balls) and need to edit the depth attribute. Each ball is defined by >> two rows in the table, eg first ball >> >> Row_ID Strike Dip Rake Magnitude Quadrant Depth >> -- >> 0 NULL NULL NULL NULL Tensional and Compressional NULL >> 1 233 38 -96 6.77 Compressional 623 >> 2 NULL NULL NULL NULL Tensional and Compressional NULL >> 3 68 36 83 5.7 Compressional 39 >> etc >> >> where rows 0,1 and 2,3 represent separate beach balls, so basically it >> is a row calculation >> >> What I need to do is replace the Depth NULL value with the depth 623 >> etc for each entry. Is there an easy way of doing this? >> >> Thanks >> >> Lester >> ___ >> 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 ___ 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
Re: [Qgis-user] Edit attribute table rows
Hello Andreas, Selecting the rows where depth = NULL is fine. The field calculator does not update the depth with the depth where known values are present. Only update selected features is checked, update existing field checked, with output field set to depth: Expression: tried just "depth" and also "depth"="depth". Have I missed something here? Thanks On 8 April 2016 at 12:30, Neumann, Andreas wrote: > Sure. > > It is a two-step thing: > > 1. Select all records where Depth IS NULL. Use the "Select Features using an > expression" button (the Epsilon sign) for that and "depth IS NULL" as an > expression > > 2. Use the field calculator and only update the selected records (the top > checkbox in the field calculator). > > You can find details about the field calculator in the QGIS manual. > > Hope this helps, > > Andreas > > On 2016-04-08 13:18, Lester Anderson wrote: > > Hello, > > I have an attribute table of earthquake data (focal mechanism beach > balls) and need to edit the depth attribute. Each ball is defined by > two rows in the table, eg first ball > > Row_ID Strike Dip Rake Magnitude Quadrant Depth > -- > 0 NULL NULL NULL NULL Tensional and Compressional NULL > 1 233 38 -96 6.77 Compressional 623 > 2 NULL NULL NULL NULL Tensional and Compressional NULL > 3 68 36 83 5.7 Compressional 39 > etc > > where rows 0,1 and 2,3 represent separate beach balls, so basically it > is a row calculation > > What I need to do is replace the Depth NULL value with the depth 623 > etc for each entry. Is there an easy way of doing this? > > Thanks > > Lester > ___ > 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 > > > > ___ 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
Re: [Qgis-user] Edit attribute table rows
Sure. It is a two-step thing: 1. Select all records where Depth IS NULL. Use the "Select Features using an expression" button (the Epsilon sign) for that and "depth IS NULL" as an expression 2. Use the field calculator and only update the selected records (the top checkbox in the field calculator). You can find details about the field calculator in the QGIS manual. Hope this helps, Andreas On 2016-04-08 13:18, Lester Anderson wrote: > Hello, > > I have an attribute table of earthquake data (focal mechanism beach > balls) and need to edit the depth attribute. Each ball is defined by > two rows in the table, eg first ball > > Row_ID Strike Dip Rake Magnitude Quadrant Depth > -- > 0 NULL NULL NULL NULL Tensional and Compressional NULL > 1 233 38 -96 6.77 Compressional 623 > 2 NULL NULL NULL NULL Tensional and Compressional NULL > 3 68 36 83 5.7 Compressional 39 > etc > > where rows 0,1 and 2,3 represent separate beach balls, so basically it > is a row calculation > > What I need to do is replace the Depth NULL value with the depth 623 > etc for each entry. Is there an easy way of doing this? > > Thanks > > Lester > ___ > 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 ___ 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
[Qgis-user] Edit attribute table rows
Hello, I have an attribute table of earthquake data (focal mechanism beach balls) and need to edit the depth attribute. Each ball is defined by two rows in the table, eg first ball Row_ID Strike Dip Rake Magnitude Quadrant Depth -- 0 NULL NULL NULL NULL Tensional and Compressional NULL 1 233 38 -96 6.77 Compressional 623 2 NULL NULL NULL NULL Tensional and Compressional NULL 3 68 36 83 5.7 Compressional 39 etc where rows 0,1 and 2,3 represent separate beach balls, so basically it is a row calculation What I need to do is replace the Depth NULL value with the depth 623 etc for each entry. Is there an easy way of doing this? Thanks Lester ___ 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