1
vote
0answers
44 views

How do you modify selected geometry with a function in qgis python console?

My example use-case is that I want to redistribute vertices along lines as in Redistribute linestring vertices to specified distance and I've written some functions to do some of the work: import ...
2
votes
1answer
40 views

Not able to save edits to vector layer in QGIS

I have a vector layer with about 200 features. So far I have been able to add polygons to this layer just fine, now it is giving me trouble. When I draw the polygon and try to save edits, the polygon ...
0
votes
0answers
23 views

pyQGIS : Way in order to know modifications?

I 'm writing a pyqgis script. I succeed in accessing gis vector data (lists) from my remote server (thanks to urllib) . I succed in displaying geometries and attributs. 1/ Now, i would like manage ...
0
votes
0answers
17 views

Created polygon appears to move when zooming in (qgis)? [duplicate]

I am using QGIS 2.20 on a Windows 8.1 64-bit laptop. I have a shapefile that includes a polygon that I created from digitizing a Google Satellite image from OpenLayers Plugin. Here is my problem: ...
2
votes
1answer
37 views

How to undo misclicks while drawing a polygon?

I'm trying to draw some polygons in QGIS 2.2 and I lose it, because everytime I misclick, I don't find a way to undo that point and start drawing again. I'm sure there's a way. Does anyone know it?
0
votes
1answer
54 views

In QGIS are there similare construction tools to ArcGIS?

For a project we are using ArcGIS to reshape autogenerated features. For that we often use the construction tools polygon, rectangel, circle, etc in ArcGIS. The right angle is also an often used tool. ...
0
votes
0answers
13 views

Link/unlink buttions in the Attribute Table's Form View

Toggling the edit button, in the Form View/Table View, buttons for adding/deleting a record is available. Two additional buttons are also available (Fig. 1). From the look of the icons they perform ...
1
vote
0answers
46 views

Cannot Save Edits to File Geodatabase Replica in QGIS 2.2

When trying to edit a File Geodatabase Replica in QGIS 2.2, everything works as expected until the user saves their edits. When pressing save, all edits revert back to their original state with no ...
1
vote
0answers
20 views

Move and zoom map-layer while editing

I want to create lines with the help of "CAD-like improved line capture", make a point, pretend an angle or distance want to put the second point. To this end, I have to zoom out on the map, select a ...
1
vote
0answers
118 views

Editing QGIS point layer: retrieve attributes of intersecting line layer

I'm creating a custom editing form using QGIS 2.0 and would like to modify the mouse event when creating a point. I've gotten a start by reading this thread: How to programatically check for a mouse ...
0
votes
1answer
88 views

v.edit break: how to loop through XY coordinates on using GRASS on Windows 7

Trying to follow the suggestions on this thread: splitting a lines layer using points However, how to do so in a windows environment using the GRASS command console is beyond me, so I'm attempting ...
0
votes
0answers
44 views

Rings not displaying on .TAB import to .SHP save

I have some strange behaviour happening when importing a MapInfo .TAB file into QGIS. One feature contains internal rings which are ok on initial import but do not show on the first .SHP save. I can ...
3
votes
2answers
86 views

How to edit overlapping lines?

I am trying to edit bus routes in QGIS. Multiple bus routes can run on the same street. When I want to change one bus route, I select one of them, then I enable editing mode. With the Node tool, I ...
2
votes
2answers
55 views

Saving edits slowing down (QGIS 2.01)

QGIS 2.01 on Windows 8 I have a polygon layer which I edit in QGIS 2.01. Editing (cutting, deleting, editing new polygons with attributes) works fine. I am saving the changes after every edit or so ...
0
votes
1answer
53 views

attribute table in qgis wont save custom values

I am trying to edit a point shapefile in qgis and I have editing on for that layer, I have added a new column for the custom data, I have set it to text and have 8 characters allowed in the column ...
3
votes
1answer
59 views

Edit KML with the mouse in QGIS: is it possible?

In google maps, and more recently in Google Maps Engine Lite, you can create a Track/LineString by clicking with the mouse along a route, delete some intermediate point, drag the midpoint of a segment ...
1
vote
2answers
216 views

Does QGIS attribute edit form support “relationship” data?

Consider I have a geometry table having one-to-many relationship with a no-geometry table. When I create a feature (geometry), I would like to be able to add the relative no-geometry table data in the ...
3
votes
4answers
321 views

Esri File GDB multi-user edit through QGIS

I have an Esri File GDB with relationship classes. I would like to import this GDB in PostgreSQL or MSSQL to enable multi-user edit through QGIS (dufour) tool. What are the steps/procedures to ...
3
votes
1answer
64 views

How to create a printable data sheet when using edit widget “value realtion” in QGIS 2.0?

I created a spatiaLite Database with a point layer (every point is a tree). Additional I created several tables to fill the columns of the spatial layer with attributes using the editing widget “value ...
1
vote
0answers
130 views

Editing of vector layer programmatically with QGIS

I'm trying to edit vector layer using Python console and have couple of questions. Why this approach doesn't work and I have to use canvas.refresh? If I will use this code not in python console but in ...
3
votes
1answer
928 views

Why can't I edit attribute table imported through 'text as layer'

I imported the coordinates from an Excel table. They show as single points as intended. Now I want to add columns to the attribute table, but I'm not able to edit it. I wanted to import the following ...
1
vote
1answer
195 views

Edit Sketch options for digitizing polygons

Trying my hand at building a methodology on QGIS as opposed to ESRI, and I'm having some issues with simple digitizing of irregular polygons. The edit sketch graphic that appears when adding a new ...
1
vote
1answer
165 views

How To Show Percentages By Coloring Polygons in QGIS?

I am trying to produce a map with QGIS that has counties shaded according to the percentage of people born in a US Region. For example, counties with a high percentage of people born in the South ...
6
votes
3answers
1k views

How to fill a hole in a multi-polygon layer on QGIS 2?

I need to fill a hole in a multi-polygon layer on QGIS 2.0. I've set the snapping option for the layer as follows : mode: to vertex and segment tolerance 4 pixels avoid intersection "enabled" ...
2
votes
0answers
127 views

Spatial Precision for Editing in Multiple GIS Clients

I have something I'd like to discuss, I'll try to explain it first, why it's important, and I'll explain how ArcGIS handles the issue, which I think is a good way to handle it. Finally I'd like to ...
0
votes
1answer
177 views

How to remove shapefile polygon vertex marker points in QGIS 1.8.0

I have created a shapefile layer and drawn a polygon to show the boundary of a woodland. How can I edit the polygon to remove the crosses that denote the intersection of two points on the boundary?
7
votes
2answers
678 views

Version editing for Postgresql 9.2.4 / postGIS 2

Background: I am "building" a GIS with PostgreSQL 9.2.4 / PostGIS 2 as the database and QGIS 1.8.0 as the geographic application. There will be multiple users accessing, editing and viewing the data ...
1
vote
1answer
50 views

How to work around “OGR-failure while deleting field 13. Invalid field index”?

this post might be related to this one: QGIS Field Calculator Results Removed When Saving Edits But there is no suitable answer for me It is not allowed to ask another time in the other post I ...
5
votes
4answers
517 views

ArcGis Trace Tool for QGis?

is there any tool in quantum gis that traces a line like the trace tool (Editor Toolbar) in arcgis? I want to draw a line and trace this line back so that i get the beginning and the end of the line ...
2
votes
1answer
77 views

How to split complex lines?

I want to edit some complex polylines, which I imported from my GPS. These polylines have many vertices and are selfintersecting many times. When I try to split these lines using the 'Split ...
2
votes
1answer
1k views

How to manually edit point coordinates in QGIS?

Is there a tool for shapefiles or a QGIS plugin available, which will enable me to edit the coords of a point manually ? ("tool" -f1 "Tsunami Gauge"-move x1.abcdef -to x2.ghijkl) I do have ...
5
votes
1answer
180 views

Can I edit shapefile while using a definition query in QGIS?

Is it possible to edit shapes while using a "definition query" or "query builder" in QGIS? I'm trying to do this in the same way I used to in ArcGIS. Thanks!
1
vote
0answers
68 views

How do you split a feature using an existing line in QGIS?

All, Is there a way to split a feature (polygon) using an existing line (selected polyline) in QGIS? Thanks! -m
2
votes
0answers
53 views

QGIS 1.8.0 Mac can't create ring

Can anyone spot what is wrong here? I've selected single feature, the existing rings are obvious, it's not intersecting anything (even a feature in another layer...
2
votes
1answer
295 views

QGIS 1.8.0 on Mac - how to cut/paste/delete?

I have a line vector layer selected, editing is on, I select one vector (a dozen points) with the node select tool so the vertices are red squares. the cut icon is greyed out, command/X does ...
6
votes
1answer
75 views

Is there a way to select only a certain polygon for editing?

I have a spatialite data base with 4300 polygons contained within. I wish to be able to edit the polygons but once i have highlighted the Polygon from the attributes table i find it hard to edit the ...
2
votes
2answers
628 views

Why are edits in shapefile table not saved?

I have created a shapefile (point data) and wish to change some parameters in the files table data. I can edit the data and see the coresponding change in my my symbology. However, when I save the ...
0
votes
0answers
110 views

Toggle editing layers

I search one plugin that alows start an editing session aplied to some layers from postgis connection at the same time as we can in ArcGis?
7
votes
1answer
372 views

How to rectify polygon shapes in QGIS?

I have some polygon-shapes in qgis-1.7.0 and want to ensure that every polygon is a rectangle. See image below. Is there any way I can do this in QGIS (or any other f/oss)? Or how can I improve my ...
11
votes
3answers
310 views

How to improve drawn shapes in Quantum-GIS?

I have a polygon-shape in qgis-1.7.0 and want to fix overlays and gaps between the edges of adjacent polygons. See image below. Is there any automated way to do this in quantum-gis? Or any other ...
1
vote
0answers
35 views

Is it possible to permanently save the Edit Widget for a Postgis layer?

Is there a way of configure the editing type for a POSTGIS layer through Edit Plugin and do not lose the changes after remove the layer or exit the program?
6
votes
2answers
464 views

Is there a quick way to invert a node selection in QGIS?

is there any way to invert a node selection in QGIS? For example, I want to extract a small section of a long line - if I select the nodes I want to keep, is there any way to invert that selection so ...
2
votes
2answers
2k views

Editing polylines in QGIS (extend, trim, fillet etc)

I was wondering, if its possible to edit lines and polylines in qgis, in similiar way as autocad commands "extend", "trim" and "fillet"? About how the commands for in Autocad, very shortly: The ...
4
votes
2answers
217 views

Edit Toolbar Became Disabled While Editing in QGIS

My edit toolbar became disabled while I was editing a layer in QGIS. I have closed the window and opened it again to edit, but it is still disabled.
1
vote
0answers
74 views

Is there a way to make a qgis project only editable by me

In QGIS, currently Lisboa 1.8.0 is there a way to make it only editable by me. I want to set up projects for each client on the network, so when all the files are on the network and the program and ...
4
votes
3answers
945 views

How to split lines on vertex?

I've searched a lot but didn't find an answer: When editing lines with QGIS, I often need to split a linestring exactly on one of his existing internal vertices, but I can't find a way; I've tried the ...
1
vote
1answer
317 views

Is it possible to edit Delimited Text Layers in QGIS?

GIS beginner here... I have a tab-delimited text file that I'm importing into QGIS just fine. But I try to edit the attribute table, the little pencil-looking button is grayed out, and it's not ...
0
votes
0answers
387 views

Why is a Shape polygon file not editable?

I received a .shp polygon file. When I choose the edit toggle tool in QGIS the little red X's appear as expected. Then when I try to edit the polygons such as add a polygon all seems to go well, when ...
4
votes
1answer
2k views

How to create a hole in a polygon in QGIS?

I'm trying to use the tool "delete ring" in order to create a hole in a polygon. The geometry of the hole is another feature of the same shapefile I cannot manage to delete the part of the polygone. ...
4
votes
4answers
3k views

Is there a Rotate Tool in QGIS?

I can see the move tool. But coming across versions, i did not see any Rotate tool in Quantum GIS. As a hardcore feature editor myself, i have found it rather difficult. Am i missing something ...