Top new questions this week:
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Basically, I have the layers above: As shown in the image, I’m trying to join the layer lines with the layer points two times in a row so the labels of origin_id and extremity_id appear in the …
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Is this intentional or an error? In QGIS I am trying to filter a layer by the attribute “Foot”. I can easily filter by writing “Foot”=’no’ and it behaves like expected. But when I …
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I have a large river network vector file, where there are disconnections between features. Is there any way to join the nearest dangling points as in the figure below? I found there is a plugin “…
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Using the shortest_line function conditioned to a table attribute to return the shortest line joining features of the same layer as it shows in this expresion: shortest_line( $geometry, …
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I am looking for a QGIS function to count specific point values inside polygons. I have a number of points, all sorted in specific categories “HOOFDGROEP” and a rectangular grid (see image). …
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I have two layers. In first there are points with attributes in the form of text. In the second layer there are polygons. I need to connect the polygons with numbers that are above these polygons into …
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I tried the following script in QGIS: from qgis.gui import QgsMapToolEmitPoint class ClickedPoint(QgsMapToolEmitPoint): global pp def __init__(self, canvas): self.canvas = canvas …
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Greatest hits from previous weeks:
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I’m having problems creating new shapefiles – in QGIS 2.14.20 any new fields I create and any associated data are not saved. I’ve now got the same problem in QGIS 3.0, but there I get a message …
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I’ve made a few maps in QGIS Composer and set them up initially as 8.5×11 page size. I want to begin with that layout and apply it to 11×17 page size. However when I change this in the Page Layout, …
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I would like to convert .shp into .gpx. Using GIS, I open my shapefile and I tried to “save as” gpx but it gives an OGR error: creation of field ObjectId failed (OGR error: Field of name ‘…
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The discussion at What is the difference between WGS84 and EPSG4326? shows that 4326 is just the EPSG identifier of WGS84.. Wikipedia entries for Google Maps and OpenStreetMap shows that they both …
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I have a polygon vector and I want to quickly attain the centroid of this polygon for insertion in a text document. I am working with QGIS. I searched through other questions and although some are …
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Can anyone provide me with a link (or some details) on the actual ratio to “zoom level” figures for Google Maps? e.g. Google Maps Level 13 = 1:20000
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I have created one table in my PostGIS nut I cannot insert point. What is wrong with my query? CREATE TABLE app ( p_id INTEGER PRIMARY KEY ); SELECT AddGeometryColumn(‘app’,’the_geom’,’4326′,’…
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Can you answer these questions?
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I am trying to style the UI elements built through Qt Designer(drag-drop) via the plugin for QGIS. I have tried to import ‘style.css’ to the plugin main file, but it is not reflecting the changes in …
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Referring and quoting the SNIC (Simple Non-Iterative Clustering) paper: In each k-means iteration, SLIC evolves a centroid by computing the average of all pixels that are closest to it in terms of d …
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I am trying to create the following table, but when I execute the query I get the SQL status: 42701, which refers to a duplicate column error (cost column). However, when I run the statement without …
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