Re: [Qgis-user] Drop the points and show only clusters
Helo I watched the video in the weblink below. I was able to get up to the layer styling step. But,I am unable to figure out how to accomplish this task. I am herewith attaching the sample data of 1000 points. Can anyone please guide me the steps so that I will have only those points that are within 1000ft of each other and drop the rest of the points? Regards. https://anitagraser.com/2017/06/13/even-more-aggregations-qgis-point-cluster-renderer/ >> >> >> On 28/01/22 09:25, krishna Ayyala wrote: >> > Hello, >> > I have a point shape with about 10,000 points. On the map, I wish to >> > show only those points that are within 1000ft of each other and drop >> > the rest of the points. All I am trying to see is only the clusters. >> > Can anyone help please? >> > >> > 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
Re: [Qgis-user] Drop the points and show only clusters
Sorry, I am not experienced in using this. The programmers who wrote it might be able to assist you on the Qgis user list. On 28/01/22 14:58, krishna Ayyala wrote: Patrick, Thank you for sending the weblink. I watched the video. I was able to get up to the layer styling step. But,I am unable to figure out how to accomplish this task. I am herewith attaching the sample data of 1000 points. When you get a chance, can you please guide me the steps so that I will have only those points that are within 1000ft of each other and drop the rest of the points? Regards. On Thu, Jan 27, 2022 at 2:23 PM Patrick Dunford wrote: Hi, a point cluster renderer is available in layer styling Have a look at this web site https://anitagraser.com/2017/06/13/even-more-aggregations-qgis-point-cluster-renderer/ On 28/01/22 09:25, krishna Ayyala wrote: > Hello, > I have a point shape with about 10,000 points. On the map, I wish to > show only those points that are within 1000ft of each other and drop > the rest of the points. All I am trying to see is only the clusters. > Can anyone help please? > > 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 ___ 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] Raster .asc and .nc wrong projection
Hi, I have a problem importing raster .asc or .nc in the qgis new version 3.22.3 on MacOS platform. Unfortunately, I'm not yet able to reproduce the issue, I'll try. However, it seems that starting with a new project and importing raster as .asc or .nc the things work fine, then it happens that the origin and the scale of the raster change wrongly without any reason. In my case, origin changes beside the scale which seems to be coupled. Anyone has experienced this issue? I have the error message: Approximate used transformation from ESRI:104000 to EPSG:4326 but I don't think it is the problem. The same dataset in the same qgis version 3.22.3 on ubuntu (installed from package deb) has not the same problem. It seems the project becomes corrupted. Any clue? Cheers, Eugenio ___ 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] Drop the points and show only clusters
On Fri, 28 Jan 2022 at 06:26, krishna Ayyala wrote: > > Hello, > I have a point shape with about 10,000 points. On the map, I wish to show > only those points that are within 1000ft of each other and drop the rest of > the points. All I am trying to see is only the clusters. Can anyone help > please? Try exploring the "DB SCAN" tool available in the Processing toolbox! Nyall ___ 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] Drop the points and show only clusters
Hi, a point cluster renderer is available in layer styling Have a look at this web site https://anitagraser.com/2017/06/13/even-more-aggregations-qgis-point-cluster-renderer/ On 28/01/22 09:25, krishna Ayyala wrote: Hello, I have a point shape with about 10,000 points. On the map, I wish to show only those points that are within 1000ft of each other and drop the rest of the points. All I am trying to see is only the clusters. Can anyone help please? 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 ___ 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] Drop the points and show only clusters
Hello, I have a point shape with about 10,000 points. On the map, I wish to show only those points that are within 1000ft of each other and drop the rest of the points. All I am trying to see is only the clusters. Can anyone help please? 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
[QGIS-it-user] [MacOS - QGis 3.22.3] Importare .asc o .nc
Salve, ho un'problema nell'importare raster .nc ed anche .asc con la versione nuova 3.22.3 su Mac. Purtroppo non sono riuscito a ricreare l'errore, ma inizialmente i raster vengono importati correttamente e visualizzati correttamente. Poi in seguito a qualcosa che non ho capito, vengono rappresentati scalati male. Ovvero per i .asc cambia l'origine e viene raddoppiato nelle dimensioni. Qualcuno ha avuto un'esperienza simile? Non credo ci combini il messaggio: Usata una trasformazione approssimata da ESRI:104000 a EPSG:4326 Lo stesso dataset sulla stessa versione 3.22.3 da pacchetti deb viene visualizzato correttamente e viene visualizzato il solito messaggio. E' come se il progetto si corrompesse, perche ricreando da zero il progetto tutto torna a posto, finche non si ricompromette. Idee? Saluti, Eugenio ___ QGIS-it-user mailing list QGIS-it-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/qgis-it-user
Re: [QGIS-it-user] R: I: Digest di QGIS-it-user, Volume 75, Numero 15
Grazie Matteo L'azione che mi avevi suggerito non la posso provare in quanto non so come fare a leggere il contenuto di una cella della tabella attributi quando l'ho selezionata con il mouse il contenuto di una cella è esattamente il compito del'azione di QGIS. Prova a dare un'occhiata alla documentazione: https://docs.qgis.org/testing/en/docs/user_manual/working_with_vector/vector_properties.html#actions-properties Matteo ___ QGIS-it-user mailing list QGIS-it-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/qgis-it-user
[QGIS-it-user] R: I: Digest di QGIS-it-user, Volume 75, Numero 15
Grazie Matteo L'azione che mi avevi suggerito non la posso provare in quanto non so come fare a leggere il contenuto di una cella della tabella attributi quando l'ho selezionata con il mouse Grazie Franco -Messaggio originale- Da: matteo Inviato: giovedì 27 gennaio 2022 14:04 A: Franco Cazzola ; QGIS Italia Oggetto: Re: I: Digest di QGIS-it-user, Volume 75, Numero 15 Ciao Franco, ti suggerirei di rispondere sempre in lista cosi anche altre persone entrano nel thread e possono dare una mano. > Problema 2 > Non conosco python pertanto chiedevo se ci fosse uno script completo che fa > più o meno questo: > - seleziono una cella della tabella attributi del layer attivo > - leggo la desinenza (.pdf, .jpg, .mpg, ...) > - eseguo l'azione conseguente la soluzione che ti avevo suggerito non funzione? A presto Matteo ___ QGIS-it-user mailing list QGIS-it-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/qgis-it-user
Re: [QGIS-it-user] I: Digest di QGIS-it-user, Volume 75, Numero 15
Ciao Franco, ti suggerirei di rispondere sempre in lista cosi anche altre persone entrano nel thread e possono dare una mano. Problema 2 Non conosco python pertanto chiedevo se ci fosse uno script completo che fa più o meno questo: - seleziono una cella della tabella attributi del layer attivo - leggo la desinenza (.pdf, .jpg, .mpg, ...) - eseguo l'azione conseguente la soluzione che ti avevo suggerito non funzione? A presto Matteo ___ QGIS-it-user mailing list QGIS-it-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/qgis-it-user
Re: [Qgis-user] topological editing geographic data fails
Hi, this is an unfortunately long standing issue: https://github.com/qgis/QGIS/issues/29648 In short: project crs and data crs have to be the same Cheers, Bernd Am 27.01.22 um 12:19 schrieb Klaus Mithöfer: Hello List, I tried to edit geographic data (Linestrings, 4326) in a Geopackage but I failed to use the topological editing to move joint vertices. I also had problems with snapping on segments and/or vertices. It always snapped to the next vertex (snapping distance in pixel). Does it work with projected data only? If I reproject the layer to UTM 25832 everything is fine. I work with QGIS 3.16 Kind regards, Klaus ___ 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] topological editing geographic data fails
Hello List, I tried to edit geographic data (Linestrings, 4326) in a Geopackage but I failed to use the topological editing to move joint vertices. I also had problems with snapping on segments and/or vertices. It always snapped to the next vertex (snapping distance in pixel). Does it work with projected data only? If I reproject the layer to UTM 25832 everything is fine. I work with QGIS 3.16 Kind regards, Klaus ___ 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] Identify tool disabled
Hello everyone, I have a strange problem with the identify tool corresponding to a WMS. The service offers a GetFeatureInfo-Request, but only with the info_format text/xml. If I have look into the layer properties, Qgis recognised this information from the capabilities. A feature info request with this info format works from the browser without problems. But if I select the WMS layer, the identify tool button is disabled, i.e. I am not able to get feature information in QGIS for this service. I had a look on open geospatial.GitHub.io/e-learning to read about possible info formats: text/xml is not listed. If a server should serve the information as GML, the text info should be application/vnd.ogc.gml or application/vnd.ogc.gml/3.1.1. Does QGIS disable the identify tool, if the server only offers a non standard info format? P.S. the WMS is a Smallworld Server (such a mess -.-) Best regards, Christoph ___ 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-it-user] deleteShapefile in pyqgis
Buongiorno a tutti,
noto un comportamento strano in pyqgis nell'usare la funzione
QgsVectorFileWriter.deleteShapeFile(file_path)
di seguito il codice molto semplice che uso:
def removeLayer(path_layer):
# remove layer from TOC if already loaded
basefile = os.path.basename(path_layer)
diff_layer = os.path.splitext(basefile)[0]
directory = os.path.dirname(path_layer)
extensions = ["shp", "shx", "dbf", "prj", "sbn", "sbx", "fbn",
"fbx", "ain", "aih", "ixs", "mxs", "atx", "xml",
"cpg", "qix"]
output_path=path_layer
if os.path.exists(path_layer):
if len(QgsProject.instance().mapLayersByName(diff_layer)) > 0:
lyr = QgsProject.instance().mapLayersByName(diff_layer)[0]
print('renaming layer1: ', lyr.id())
QgsProject.instance().removeMapLayer(lyr.id())
QgsVectorFileWriter.deleteShapeFile(path_layer)
In sostanze se mando l'ultima riga dalla console python di QGIS cancello
correttamente lo shapefile. Internamente al mio codice rimane in cartella
il file .shp e .dbf che non vengono cancellati generandomi errori nella
parte seguente.
Qualcuno saprebbe dirmi dove sto sbagliando?
Grazie
P
--
Ing. Pierluigi De Rosa (PhD in Earth Science)
Contract Professor of Geographic Information System at University of Perugia
cel: 3497558268 / fax: 075 7823038
skype: pierluigi.derosa
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