Re: [Qgis-user] Write vector attribute table from pandas dataframe
Thanks, Wouter and Nicolas I will give it a try. Cheers Ming On Sun, Apr 24, 2022 at 9:33 AM Wouter Impens via Qgis-user < qgis-user@lists.osgeo.org> wrote: > Hi, > > If you have a field to join on, you could export the dataframe to > something that is readable in QGIS like csv or xlsx > > Greetings > Wouter > > Op za 23 apr. 2022 om 19:34 schreef Nicolas Cadieux via Qgis-user < > qgis-user@lists.osgeo.org>: > >> Hi Ming, >> >> The best thing would be to show your code and ask others how it can be >> optimized. I find that https://gis.stackexchange.com/ is the best place >> to do this but this user list definitely has some very competent >> programmers. Not being one of those competent programmers, I will just >> state that pandas and geopandas use a process called vectorization where >> the “for loop” is done for you. >> >> >> https://medium.com/analytics-vidhya/understanding-vectorization-in-numpy-and-pandas-188b6ebc5398 >> >> This means that looping over elements in a dataframe can be MUCH slower >> than using vectorization. So basically, you need to figure out the right >> code and avoid “for loops“ when using dataframes. >> >> Hope this helps >> >> Nicolas Cadieux >> https://gitlab.com/njacadieux >> >> Le 22 avr. 2022 à 11:50, ming han via Qgis-user < >> qgis-user@lists.osgeo.org> a écrit : >> >> >> Hi everyone >> >> Is there an efficient way to copy data in a pandas dataframe to the >> vector attribute table? >> >> I am looping element by element, which is very slow. >> >> Thanks >> Ming >> ___ >> 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 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] Insert Logo into the map composer
Alexandre, That worked. Thank you for your help. Regards. On Sun, Apr 24, 2022 at 1:52 AM Alexandre Neto wrote: > Hi, > > If I am not wrong, I think you can simply drag and drop the jpeg file into > the layout. > > Give it a try. > > Alexandre Neto > User support > www.qcooperative.net > > A sábado, 23/04/2022, 22:04, Nicolas Cadieux via Qgis-user < > qgis-user@lists.osgeo.org> escreveu: > >> Select raster image >> >> On 2022-04-23 2:52 p.m., krishna Ayyala wrote: >> >> Thank you. But that popup window is not allowing me to navigate to any >> jpeg file. only option it has is svg image. >> Regards. >> >> On Fri, Apr 22, 2022 at 9:35 AM Nicolas Cadieux < >> njacadieux.git...@gmail.com> wrote: >> >>> Hi, >>> >>> >>> https://docs.qgis.org/3.22/en/docs/training_manual/map_composer/map_composer.html >>> >>> You will see an Icon on the left (blue sky with a mountain). Or Add >>> Item/add picture. >>> >>> Nicolas >>> >>> On 2022-04-22 9:05 a.m., krishna Ayyala via Qgis-user wrote: >>> > Hello, >>> > I have a map in the map composer. How can I insert a logo which is a >>> > jpeg image into the map composer? >>> > >>> > Regards. >>> > >>> > ___ >>> > 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 >>> >>> -- >>> Nicolas Cadieux >>> https://gitlab.com/njacadieux >>> >>> -- >> Nicolas Cadieuxhttps://gitlab.com/njacadieux >> >> ___ >> 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
