Hi folks,QGIS 3.10I would like to create polygons (see 4 corners everyone) with
Python form .csv like that:LP CORNER Y X1 1 51.558868
21.6969851 2 51.596337 21.7455891 3 51.603166
21.7276871 4 51.565424 21.6824162 1 51.590928
21.7604422 2 51.553125 21.7098472 3 51.559536
21.69592 4 51.598023 21.7420783 1 51.548047
21.7243273 2 51.586238 21.7738433 3 51.593172
21.7561853 4 51.554643 21.709932According to QGIS Python
Programming Cookbook I know how to load csv file:uri =
"D:/PODYPLOM/plikiCSVtoSHPviaPythonpokrycieCSV.csv?"uri += "type=csv&"uri
+= "xField=X&yField=Y&"uri += "spatialIndex=no&"uri +=
"subsetIndex=no&"uri += "watchFile=no&"uri +=
"crs=epsg:4326"layer=QgsVectorLayer(uri,"Tourism
Sites","delimitedtext")QgsProject.instance().addMapLayers([layer])and I know
how to create polygon layer from points added by finger:vectorLyr =
QgsVectorLayer('D:/qgis_data/polygon/polygon.shp', 'Polygon', "ogr")vpr =
vectorLyr.dataProvider()points =
[]points.append(QgsPointXY(-123.26,49.06))points.append(QgsPointXY(-127.19,43.07))points.append(QgsPointXY(-120.70,35.21))points.append(QgsPointXY(-115.89,40.02))points.append(QgsPointXY(-123.26,49.06))poly
= QgsGeometry.fromPolygonXY([points])f =
QgsFeature()f.setGeometry(poly)vpr.addFeatures([f])vectorLyr.updateExtents()but
I can't load points from csv to line: points.append(QgsPointXY())Anybody can
help me how to do this ?Cheers, Marcin PietruszewskiOd: "Didier Peeters"
<[email protected]>Do: "qgis-user" <[email protected]>;
Wysłane: 10:26 Sobota 2020-03-21Temat: Re: [Qgis-user] importing data to
mapHi,I don't know about your data or what you call a "function" here, but yes
you need to have it loaded in QGis as a layer (with or without geometry).
To do so and supposing you have a .xls or .xlsx file you can install the
'Spreadsheet Layers' plugin, which adds a "Add spreadsheet layer" entry
in "Layer" / "Add new Layer" menu and a corresponding button in the "Layers"
toolbar. Alternatively you could maybe convert your data into a
.csv file and load it as well. Once your file is loaded you should be
able to create the relation. DidierLe 21 mars 2020 à 08:49, Boaz Bar Ilan
<[email protected]> a écrit :hi thanks I need to
present all the functions as one layer so how can this help me?בתאריך יום ו׳,
20 במרץ 2020 ב-15:39 מאת Didier Peeters <[email protected]>:Hi,
You need to use a Relation, in the project properties (Menu: Project >
Properties > Relations).
See these videos to understand how it works
:https://youtu.be/MeBnasFHGGQhttps://youtu.be/OowgI1b2ihw
Cheers,
Didier
> Le 20 mars 2020 à 12:33, Boaz Bar Ilan <[email protected]> a
écrit :
>
> hi there
> I got data xcls which describes functions in relation to parcells
> im trying to import this spreadsheet to a map of parcells and what
happen of course that if there are 2 functions in the same parcel - it shows
only one!
> how can I show 2 functions or more related to the same parcel ?
>
> I can use the add polygon feature but than it should be done manually one
by one
> is there different way ?
> thanks
> boaz
>
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