qgisshortest path
On the picture below, I want to let my point connect to the line with the shortest distance and show the distance to me.
I tried NNjoin, MMQGIS, v.distance But I still can't get the distance.
How do I connect them and get the shortest distance?
After that, I used the field calculator, but I think the distance is wrong
I measured it by myself, is any details can tell me to calculate the distance?
Another option from mentioned by @Spacedman is the following:
This option could also help you to create some nice visualizations.
Plugins > Connect Points > Settings and set appropriate options.
$length.
A simple solution for your question is using QGIS tool Distance to Nearest Hub. However, this tool does not bring into account your particular way of calculating distance using a 90 degree angle, as you specified. It simply measures the distance from each input point to the middle of each line feature.
Here is an example of how the tool can be used in a similar context:
Input:
Parameters (Hub Layer name attribute is the attribute from the line layer you wish to keep, in your case 'id'):
Output (same points as input, with added attribute):
As with any other processing algorithms, make sure both your layers are using the same coordinate systems (in your case you had a different CRS for each input layer). If the distance field (Hub Dist) is of importance to you too (not just which feature is closest), then make sure you are also using projected coordinate systems (not 4326).
Hope this helps!
Best Answer
It is possible to create a line that joins points and line using the Geometry generator.
In the point layer symbology, select the Geometry generator and use this expression to create the shortest line between the two geometries
To know the distance between the two geometries, AKA the length of the shortest line, you can use this expression in the label expressions or use it in the Field calculator to create a new field with this information