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Questions tagged [qgis-2]

Version 2.x of QGIS (previously Quantum GIS)

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0answers
941 views

Adding pictures to the shapefile objects in QGIS/QField?

Here is the thing, I want to add pictures that either are georefered (BY GPS Camera) or added manually to both new created objects and existing objects. Now to be clear I do not mean adding pictures ...
1
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0answers
190 views

QGIS printing shift on WGS 84 Pseudo Mercator base?

I've had this problem before but I'm not succeeding in fixing it using what I thought worked before. This has been brought up as an issue previously, but I'm stuck when I apply the previous answers. ...
1
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3answers
908 views

Creating dynamic field area in QGIS? [duplicate]

I work with this perimeter\area fields: i created it with "Add geometry columns" vector tool. How can i create a dynamic perimeter\ area fields, so when i create a new feature or change existed ...
1
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1answer
76 views

Trouble with creating new attributes on large shapefile?

I have a point shapefile with ~2.5 million points. I am creating a new attribute converting ft to m, and QGIS (2.18.15) is having trouble working with the datasets. I have seen suggestions to only ...
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2answers
494 views

Fast way to merge 8000 raster?

I have to merge almost 8000 rasters (TIF). I tried using Mosaic To New Raster in ArcGIS 10.3, but it's processing really slowly and crashes quite often. Is there a faster (or more stable) way to ...
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0answers
253 views

GRASS r.slope.aspect via QGIS 2.18 vs QGIS 3.4 - not working

I seem to be unable to replicate actions with GRASS tools when I access them through QGIS 3.4. In particular the r.slope tool. I receive error messages and it fails in QGIS 3.4. They seem to work fine ...
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1answer
148 views

Getting the DB name of the spatialite table loaded inside QGIS using PyQGIS

I have a table loaded in QGIS from spatialite DB. When i see the layer properties it is dbname='/home/farook/Spatialite/Cities.sqlite' table="cities" sql=. Now i want the dbname alone (i.e) the entire ...
1
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1answer
638 views

Exporting from Excel to csv and import in QGIS retaining encoding/special characters (with workaround)?

Problem: When exporting Turkish character encoding into a csv file from an Excel Table (Excel 2013) as a source file I can´t import the resulting csv into QGIS to still displaying the characters ...
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1answer
2k views

Uninstalling/reinstalling QGIS plugin where uninstall is disabled?

Plugin Raster->TerrainAnalysis->slope which had initially worked, started showing what another questioner referred to as a "crazy histogram": Slope analysis from NED data gives crazy histogram? ...
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0answers
300 views

How to show and access SAGA not shown in Processing Panel in QGIS 2.18.4? [closed]

How to get SAGA modules to show and be usable within QGIS, i.e. from within the Processing Panel? I have tried reinstalling SAGA (now = Version: 2.1.2 64 bit) through the OSGEO4w installer and tried ...
1
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1answer
296 views

Removing the existing context menus from legendlayeractions QGIS 2.6.1 using python

a = QAction( u"My Action", iface1.legendInterface() ) iface1.legendInterface().addLegendLayerAction( a, u"My Plugin Menu", u"id1", QgsMapLayer.VectorLayer, True ) #adds action iface1.legendInterface(...
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1answer
664 views

QGIS How to draw lines from two points in a CSV?

I have a largely identical query to How to draw lines from two points in a CSV?, however the solution listed isnt working for me. My original text format is PID, Start Northing, Start Easting, End ...
1
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1answer
273 views

QgsExpression to apply on feature

I am using QGIS 2.8. For the documentation of QgsExpression I see the evaluate method on feature as deprecated. What am i supposed to use instead of this methods ? I have some expression and need to ...
1
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3answers
2k views

Resolving Java script Alert that This page was unable to display Google Maps element?

Whenever I try to load the Google Hybrid layer on QGIS 1.8.0 and 2.0.1, I get this error: This page was unable to display a Google Maps element. Please contact the site administrator. If you are ...
1
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1answer
75 views

GRASS 7.4 addons look installed but not accessable

I'm tring to install the addon v.centerline using the GRASS GUI 'Fetch & install extension from GRASS Addons'. I get the following message saying it's installed yet it doesn't show up. I tried ...
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1answer
9k views

How can I open a jpg format with QGIS 2.8?

I'm having some difficulties opening the jpg format at QGIS 2.8. It opens, but nothing appears.
1
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1answer
7k views

OpenLayers Plugin not working in QGIS 2.8.1 [duplicate]

I am using QGIS 2.8.1. I have installed the OpenLayers Plug, however it is not showing up in my list of plugins. I confirmed it's installed in the plugin manager. Is anyone else having this issue?
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0answers
135 views

Understand ramp color interpolation using QGIS 2.12

I try to understand the color ramp in TIN and IDW interpolation. I work with height points layer. The low value in 8 and the highest value is 584. With the interpolation plugin i create TIN raster ...
1
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1answer
191 views

Determining if line is snapped to nearest linestring in PyQGIS?

I have a polyline layer and I want to find if a linestring is snapped to the nearest linestring or not in QGIS. How can I do that in QGIS? I am checking for the intersection but the intersection code ...
1
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1answer
2k views

SSL error on a freshly installed QGIS 2.14.1

I would like to ask for a help on how to fix the SSL error I'm having on a fresh installed QGIS 2.14.1 version. It seems to me it's the reason why vector, raster, and some other tools won't work when ...
1
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1answer
5k views

Label features on hover/click with QGIS?

Simple question: Is there a built in/easy way to show labels for features based on a hover or click action with QGIS 2.0.1?
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2answers
447 views

How can I ensure the image exported from Print Composer is accurate?

I'm using QGIS version 2.12.2, and using print composer to export my map to an image file (I've tried pdf as well). In the print composer it displays fine - just a basemap overlayed with land type ...
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2answers
2k views

How do I add and view *.ecw raster images in QGIS 2.2.0 on Ubuntu 14.04 LTS

How do I make ECW files work in Quantum GIS on my Ubuntu 14.04?
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1answer
289 views

QGIS - Layers with CRS EPSG:3857 incompatible with Google street map

I have been having problems applying the different CRS systems to my layers. I have generate a variable distance buffer that I want to be circles around point on a Google Street Map of a city. When I ...
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0answers
38 views

QGIS 2.14 - Saving Lat/Long csv file to ESRI Shapefile Error [duplicate]

I have a csv file that I bring into QGIS 2.14 with standard lat and long formatting. The file displays fine but when I try to save it as an ESRI shapefile I get an error: Export to vector file failed....
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1answer
60 views

Charts and Graphs that only display features in current extent

Using QGIS, QGIS Server, and Lizmap3/3Liz I am trying to make a pie chart that compares attributes but only of the features in the current extent. So when you pan around the webmap the graph changes ...
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2answers
1k views

How to snap polygons to lines?

How can I snap a polygon to a line? For example, I have a polygon which represents some meadows to snap over a line which represents a road.
1
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1answer
645 views

Buttons (Ok, Cancel) disappear in “Apri Modulo” from Attribute Table in QGIS 2.0.1

QGIS 2.0 has changed the visualisation of a form opened from the attribute table: instead of opening the form in a separate window, the form is opened in the same one. This is not a problem, but all ...
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2answers
609 views

Improving Clip Raster workflow in QGIS?

I've tried to come up with an open-source equivalent to the following process in ArcGIS 10.3: Spatial Analyst Toolbox > Extract by Mask target input: 1" SRTM DEM in EPSG 4019 mask layer: single ...
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1answer
52 views

QGIS Atlas Catalogue

I would like to know if I can set the filters to only show the current feature the map is focused on and hide the other features around it? I currently have a layer of points which the atlas centers ...
0
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1answer
295 views

Missing icon within legend if layer has a complex styling with QGIS

I'm using a complex styling for a points layer in QGIS, including two markers and a Geometry generator to set up a line between points and labels (see style description in this post). The result is ...
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0answers
41 views

Qgis Print Composer Could zoom and maintain scale

I am trying to make Qgis Print Composer zoom to feature and maintain a scale of 2500. However, the scale could not be maintained. It is showing a different scale for different page sizes. Below is ...
0
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1answer
308 views

in a single vector layer I have a three of polygons with different field values (e.g1,2,3). How Can I color each field value polygon differently?

In a single vector layer I have a three of polygons with different field values (e.g1,2,3). How Can I color each field value polygon differently? To explain a bit more my three polygons are showing ...
0
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2answers
3k views

Can QGIS2 / GDAL convert to .ECW without corruption?

I have qgis 2.0.1 and it can read *.ecw files that I download. However, when I convert say a *.jpg or *.tiff to *.ecw the output is corrupt. Has anyone seen this problem?