Linked Questions

1
vote
0answers
144 views

Determining Affine Transformation Parameters? [duplicate]

I am trying to use the qgsAffine plugin to do the transformation but I have no idea in its usage. How to find the transformation parameters? I found some posts suggest using the OpenJump How to use ...
12
votes
5answers
11k views

Methods to Convert .SVG File to GeoJSON

Question How do I convert an SVG file to GeoJSON format? Desired Outcome: I want to make a choropleth map using something like D3.js, or any of the other libraries out there. Challenge: I have an ...
11
votes
1answer
13k views

QGIS moving the layer/all features using Vector Affine Transformation

I'm using QGIS to analyse some flight tracks which were produced using a different software. Now when they are on QGIS the reference point of everything is on 0,0 which is the aerodrome reference ...
10
votes
2answers
13k views

Rotating a vector layer in QGIS with qgsAffine (or other method)?

I would like to rotate a set of vector points in QGIS an arbitrary number of degrees around a central point (or arbitrary point). This is similar to a recent question about creating a regular grid; ...
7
votes
2answers
4k views

Mirroring layers on QGIS?

I would like to know if there is any way of mirroring layers on QGIS. My current project is a bit hard to explain... I'm excavating the inside of a large pot and, in the end I will have a set of plans ...
5
votes
2answers
2k views

Seeking QGIS affine equation?

I am at the mercy of a govt authority who have provided utility information in a cad format with a 0,0 origin and a nonsense grid. About a dozen files, the grid and origin are entirely arbitrary. To ...
6
votes
2answers
1k views

Transforming data from a rotated pole lat-lon grid into regular lat-lon coordinates in QGIS?

I am working with data from a numerical weather model, the output of which is given in grid cells where I have the lat-lon coordinates of each cell's center point. The lat-lon specifications are, ...
2
votes
1answer
1k views

Using vector affine transformation in QGIS?

I'm trying to use the QGIS plugin vector affine transformation to translate a shapefile with wrong coordinates using the right coordinates of another shapefile. It looks like this I read other ...
2
votes
1answer
632 views

Calculating Affine Transformation in QGIS?

I have points taken with a Total Station, but the azimuth was set incorrectly so the map is rotated. I have a reference file with common points and in the correct orientation. Both data sets are WGS84 ...
1
vote
0answers
392 views

SVG to GEOjson with control points

I have few SVG files (maps) that I want to convert to GEOJson. On those SVG files, two markers (crosses) had been drown in order to georeference the layer. So I know the coordinates of those control ...
3
votes
1answer
295 views

Copying features to new location using QGIS?

I want to copy some features from one layer and paste them onto another layer with all their attributes, but in a different geographic location. Is this possible? These are very small features a very ...
3
votes
1answer
113 views

calibrating vector line in qgis

I have loaded GPS points into a QGIS vector layer. I also imported a vector line from a dxf file which doesn't have georeferencing. I would like to fit in line geometry between the GPS points - how ...