In QGIS 2.18 in my current point-layer I have related coordinates, which I would like to pop up when clicking on a point in the point layer. I try to use QGIS "Action" for this.
Simplified example of my point-Layer:
ID_____ | X_____ | Y_____ | Xrel__ | Yrel__ ---------- A______ | 1.0___ | 1.0___ | 1.2___ | 1.3___ A______ | 1.0___ | 1.0___ | 1.5___ | 1.0___ A______ | 1.0___ | 1.0___ | 1.0___ | 1.1___ B______ | 2.0___ | 2.0___ | 2.2___ | 1.9___
So when clicking on point A (or nearby coordinate of point A) I would like to highlight the coordinates of Xrel and Yrel corresponding to A. Is there a way to do this using the Generic or Python action type?
Preferably when selecting another point or deselecting, the highlighted coordinates disappear.
I made a sample script that follows the steps I want to do. It is not in pygis style, but more a guideline of what I want to achieve:
# here some code to load all necessary python gis modules # create a small buffer around the point where the user clicked coordinateBuffer = buffer(clickedPointOnMap,0.0001) # find all features within that buffer in the feature class (point layer) pointsInBuffer = intersect(pointLayer,coordinateBuffer) # statement to make sure to remove previous created points if isempty(pointsInBuffer) if isnotempty(pointsOnMap) remove(pointOnMap) else break else if isnotempty(pointsOnMap) remove(pointOnMap) else # extract coordinates in the attribute table of the point layer toHighlight = pointsInBuffer[:, (Xrel,Yrel)] # create a point and set layout of the toHighlight points layer pointsOnMap = make(toHighlight) pointsOnMap(fill_color_rgb(255,211,0))}