Is there any way in QGIS to make a vector layer with a rectangle of an exact size or aspect ratio? Ideally, it would be nice if the rectangle from extent tool could be limited to a set aspect ratio, but barring that, is there any way to adjust the size of a vector rectangle directly?  [EDIT] This is for QGIS 3.4
52301
When creating a polygon, how do I do it so that the lines are straight (90, 0 degrees, etc.) and when I create corners they can be right angles? For instance, how do I create a perfect square or rectangle?
91898
in QGIS, how do I make the selection color transparent? I need to split a polygon and i want to see the layer underneath it. But I have to select the polygon in order to cut it, and when i do that it turns yellow!
89814
I need to trace picture below to vector.  After tracing it with black and white mode I got result below that I don't like. I would like to have all lines to be in the same constant width.  What tracing strategy I should use to get needed result?
105436
I have a polygon vector layer and a line vector layer in a form of grid (they are both in the .shp format). I need to split polygons by these lines.   I tried digitizing tools but the problem is that it deals only with 1 line at a time and I have more than 52,000 lines. It will take a ridiculously long time to split it manually. How can it be done for all the lines?   I have QGIS 2.18.
109294
What I want to do is to fill a polygon (country) with a graphic file in any format (jpg., bmp., png.).  It should look like this:     I'm aware that GIS soft is not proper for such a operations but maybe is there any option to do it only in QGIS.
2288
I'm working with a geodataframe of points and I need to create a grid of rectangular polygons.   I know how to have bounds of the geodataframe with gdf.geometry.bounds. Now using this information and with 2 variables length and width  (L, W) of rectangular polygon, how can I create a grid ?
54446
I've got a vector layer in my project which isn't aligned with the rest of the project (see attached JPEG).  These are work files so I'm not sure when they were created or how they might have been messed with since they were created.  We moved from ArcGIS to QGIS a couple of years ago.  The infilled blue vector layer is the one I need to move, slightly north and east, so that it correlates to the blue line (also a vector).  All layers (and the project) are currently in EPSG:27700 - OSGB 1936.   If I need to create a new CRS based on OSGB 1936 and give it some new parameters, then how would I go about this?  Further information:  This is on Exmoor in SW England, and the data is uniformly almost exactly 8m out to the SW point to point - i.e I need to shift it 8m NE.
89071
Is there a way to replicate the Split Vector Layer function from QGIS in R?   I have a Shapefile containing around 20 polygons that I'd like to split into 20 separate files.   I guess since it's in QGIS there would be a solution in Python, but I'd like to integrate it into a R workflow if possible.
47369
How do I create a centerline (vector data) from two parallel polylines (vector data) in QGIS? For example, if the distances between two parallel lines are 14m, then I want to create a centerline at 7m from both lines.
58919
Does anyone know a source from which to download vector UK Ordnance Survey grids at varying resolutions? Or failing that, a tool that can create an OS grid at a specified resolution? There are plenty of ways to generate a vector grid, but I've found no way of populating the attributes with OS grid references.
53137
I am trying to create polygons from a line layer of lots and concessions (large blocks of land in rural areas).   The lines are mainly grid style as they intersect mostly at right angles.   I need to create polygons from these lines.   I tried it in QGIS and it did not work.   Any suggestions other than digitizing?   I'm using ArcEditor 10.
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Using native QGIS layer property definitions, I have successfully labelled each polygon in my layer with its area and perimeter.  Never satisfied, I now wish to label each side of each polygon with its length.  It would seem to be a common-enough requirement but I'm not getting good hits.
108778
I have a non-georeferenced vector layer that I need to be georeferenced. With raster layers the task is easy and straightforward, but I have no idea what should I do with my vector layer. I have a few control points with known coordinates which should provide some basis to transformation. So, let's say I know points with id-s of 1, 2 and 3 should have the coordinates of x1,y1 ; x2,y2 ; x3,y3. There might be some rotation and scale transformation in addition to simple shifting.   Any ideas?
31055
I was wondering if there is a way to create centre lines from polygons in QGIS? I have a polygon layer, but ideally need the centrelines as a separate file.
99483
I was just wondering if there was a LaTeX tool for making paragraphs of text into perfect rectangles. The effect is shown below in a schematic
1829
I am new at using QGIS. How can I simply split features in QGIS? The manual tells to simply draw a line through the polygon you want to split. But it doesn't work. The line disappears when finishing it. When I select the polygon and then split it, it sometimes works and sometimes doesn't (an info appears after which it does not split the feature). Does anybody have an idea why the tool does not work properly?
32278
I am using QGIS and I created a vector grid on a crop field in order to cut it into plots. I want to save each grid cell into individual polygon shapefiles automatically.  Here is an example of a vector grid I would like to split into 117 shapefiles:    Eventually, I did it manually with the selection tool and "Save as" but it is really time-consuming when there are more than 100 plots to save.    Is there any way to do it faster and more automatically?  Each plot as an attribute named "Plot" that can discriminate against them (basically being id + 1). It's the attribute used here to label them.