velox | simple window manager based
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kandi X-RAY | velox Summary
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QUESTION
I am working on converting Velox file (HDF5) to .dm3 file using Tore Niermann's plugin (gms_plugin_hdf5) to read string. Annotations on HDF5 file also need to transfer to .dm3 file. HDF5 file maybe rotate in any angle. But the position coordinate of annotation read from hdf5 file is corresponding to images without rotating. I found that the annotations didn't move with rotating images. I had to re-calculate the position coordinate for every annotation. It isn't convenient for annotations such as box or oval. And I need to extract maximum area when rotating images. So the image size will change with rotation angle. So is there better solutions for rotating the annotations? Thanks. Here is a sample function from my script. I didn't attach all because it's quite long.
...ANSWER
Answered 2021-Nov-22 at 08:04If I understood you correctly, then your source data (HDF5) stores the image (2D array?) plus a rotation angle, but the annotations in the coordinate system of the (not rotated) image? How is the source-data displayed in the original software then? (Is it showing a rotated rectangle-image?)
GMS does not support rotating imagesDisplays (as objects) and consequently also not rotations of annotations. The coordinates systems are always screen-axis aligned orthogonal. Hence the need for interpolation when "rotating" images. The data values are re-computed for the new grid.
If you don't need the annotations to be adjustable after your input, one potential thing you could do would be to create an "as displayed" image after import prior rotation, and then rotate the image with the annotations "burnt in". This is obviously only good for creating "final display images" though.
QUESTION
I'm trying to aggregate a raster r of global extent from a ~300m*300m (10 arc‐seconds, 7.4GB) resolution to a ~10km resolution (0.083333 decimal degrees), i.e. a factor of 30. Both the aggregate functions from the raster and the velox packages do not seem to handle such large dataset. I very much welcome recommendations!
...ANSWER
Answered 2021-Apr-14 at 20:35You say that raster
cannot handle a large raster like that, but that is not true. The problem is that you are trying to create a very large data set in memory --- more memory than your computer has available. You can use the init
function instead. I show that below but not using a global 300 m raster to make the example run a bit faster.
QUESTION
I am working on R to extract the mean and maximum value of a raster within a 3 meter buffer of some buildings.
For this, I have created a for loop that iterates iterates through each building to extract this two values. My current code looks as follows:
...ANSWER
Answered 2020-Oct-29 at 17:13You do not need a loop. Example data from ?raster::extract
QUESTION
This is my first time doing anything like this and google has not helped me much. I can get Javascript to work as part of the html but not as its own file.
I've set up my static files and they work for my CSS but I cannot run any Javascript from the static folder.
The path is below:
This is in my "base.html"
...ANSWER
Answered 2020-Aug-02 at 16:29try adding this ur settings
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