First of all, make sure your data is in a projected coordinate system whose linear unit is "Meter"
In the tree stand polygon's attribute table, use Field Calculator to make a new field with the expression $area - (264 * (4.5/2)^2 * 3.14). Make sure the field type is "Real" or some other numeric type.
This however will not take into ...
Yes, you can just loop through the individual features and save them like so:
dat <- read_sf ("~/data.shp")
for (i in seq_len (nrow (dat)))
fname <- paste0 ("~/split_", i, ".shp")
write_sf (dat [i, ], fname)
I found a solution using FUSION and PDAL.
First, I used @andre silva's answer from this post to clip my point clouds using the shapefiles so that I created new point clouds for each of my trees and stored them together in a new folder. Clipping LAS data using shapefile polygons and open source software?
The code in FUSION looks like this, where the flag "...
Use the SAGA tool Clip raster with polygon. This tool can be found in the Processing Toolbox.
Click the round green arrow button next to the Polygons layer. This button toggles the option to
Iterate over this layer, creating a separate output for every feature in the layer.
Since you have a list of the names of the districts you want to select, you can do this with an expression:
"DistrictName" in ('name1', 'name2', 'name3', ...)
Substitute the name of your district name column where that expression says "DistrictName." Substitute the actual district names from your list where it says 'name1', 'name2', etc.
There are two ...
I, too, encountered this problem starting about a week ago. Thinking it might be a problem between QGIS and Windows 10, I started Windows in safe mode and ran QGIS 3.8.3. In safe mode, I was able to view layer properties dialogues without the program freezing.
I can't explain it, but when I then restarted Windows 10 in normal mode, I can now view layer ...