[Qgis-user] Not able to add new feature

[Richard Duivenvoorde]

Please keep discussions to the list so others can learn from it.

In an earlier screenshot, it seemed you were exporting to a layer definition file, but you should just write out a fresh shp file (using "Save Features As...").
Then you will have a new shp file on which you can add or rewrite/edit attributes and values.

The other screenshot, it looks like you checked the 'Update existing field', but you did not yet tell QGIS WHICH field was to be updated (in the dropdown below the checkbox): proablby DESV_D?

Regards,

Richard

On 3/31/21 5:36 PM, Pere Artís - keacoustics wrote:
> 
> Dear Richard,
> 
> I've exported layer in a shape file and:
> 
> 1.-I've generate successfully DESV_D feature as a decimal.
> 
> 2.-I've tried assign to DESV_D feature some simple calculs, but not OK button is ready to be pushed... and no error exist.
> 
> Kind regards,
> 
> Pere A.
> 
> A 31.03.2021 04:39 PM, Pere Artís - keacoustics escrigué:
> 
>> Dear Richard,
>>
>> Thanks for your quick answer.
>>
>> Data are noise values on streets, so values for different parts of the street (atribte table picture)
>>
>> The problem could be solved exportinf to a shapefile. But: how can I go on? What option should be selected? (option picture).
>>
>> Kind regards,
>>
>> Pere
>>
>> A 29.03.2021 01:41 PM, Richard Duivenvoorde escrigué:
>>
>>     On 3/29/21 1:09 PM, Pere Artís - keacoustics wrote:
>>
>>         Dear all,
>>
>>         I'm trying to add a feature on my attribute table, just a new one with some easy calculation from values of the same table.
>>
>>         But: could not add the new field to the provider appears on my screen.
>>
>>         I've done all steps but no way.
>>
>>
>>     IF you can add new attributes to your table, depends on the dataprovider you have used.
>>     What kind of data is it that you loaded (is not clear from you screenshot)?
>>     IF it is some kind of data (like gps) that is not editable for QGIS, or a postgres table in which you do not have permission to add a column, you could try to 'export' your data to another (editable) format first, like geopackage or shapefile?
>>
>>     Regards,
>>
>>     Richard Duivenvoorde
>>