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QUESTION
assuming I have any function such as
f(x, y, z) = xyz
what's the fastest way of calculating every value for f given three linear input arrays x, y, and z?
Of course I can do something along the lines of,
...ANSWER
Answered 2021-Jun-12 at 17:09First create the grid mesh array (x,y,z) as 3-tuples using meshgrid
then you can apply the function in sequence:
QUESTION
I am trying to draw maps using D3.js. The GeoJson file is converted from shapefile and stored in the project folder.
The GeoJson data format:
...ANSWER
Answered 2021-Jun-10 at 14:33@AndrewReid was correct. It was a winding problem and fortunately there is a simple way to fix it using turf.js
QUESTION
Given a test data from this link:
I would like to groupby poi
column and select 2 rows for each group, then find common address
part (the colored part from table above) for each group starting from left, ie., ceng
are common for poi
is 1
, but it has been ignored.
For filter rows which has at least 2 rows for poi
and select 2 rows for each group.
ANSWER
Answered 2021-Jun-04 at 01:10A custom aggregation function solves it. For the example above, I suggest the following:
QUESTION
I'm trying to run some assembly code in Visual Studio 2012 and call it in C just for testing purposes. As I have no experience writing assembly code I have no idea what is going wrong, so I would greatly appreciate some help!
I get the following errors trying to compile the code:
...ANSWER
Answered 2021-Jun-02 at 21:47Those detailed MASM error messages tell it all.
QUESTION
I am struggling with improving the speed of interpolation of a large dataset which I am interpolating using gridfit. I have already posted a question on stackoverflow but havent got a response
So, I am thinking of trying something alternate. My idea is that if I have a huge dataset, as shown by the Python code snippet below
...ANSWER
Answered 2021-May-25 at 12:59I think what you have in mind is essentially nearest neighbors regression. Here's how you could do this with scikit-learn. Note that the number 4 of neighbors considered is an arbitrary choice, so you could also try other values.
QUESTION
I am compiling a program with visual studio and I need to figure out an equivalent cmd command so I can use Emscripten. I have tried to figure it out by pointing to the same libraries but it is not working. Is there a way to find what build command visual studio is using internally?
Output messages:
...ANSWER
Answered 2021-May-20 at 04:14Project >> Properties.
Some of the main panels like 'C/C++' and 'Linker' have a sub panel called 'Command Line' There you can find many settings.
QUESTION
hey how can I plot a 2D heatmap in 3D? Now I create a python script to make a 2D Heatmap Plot with data from CSV (CSV format: x,y,z,v). For example:
First csv
...ANSWER
Answered 2021-May-18 at 07:19Disclaimer: I am the author of the cited example, so I think that copying/pasting myself is not really a problem.
Note that your dataset does not look (at least) 3-dimensional. But I will assume there is an unwilling selection bias.
You first need to aggregate your "points" per level of altitude, which I assume is the third component of your vectors. They will be constitutive of your planes once gathered.
QUESTION
I'm aware that this has been an issue many times. However, I don't succeed in converting my xml properly.
This is a data extract of my data. There are several thousand more cases.
...ANSWER
Answered 2021-May-14 at 16:32Here is a solution using the xml2 package. The strategy is to find the reported persons nodes and the parse out all of the subnodes. There are few duplicated node names and I attempted to reduce the number of conflicts, see the comments for more details. You may have to use the node's paths as the dataframe' column names.
QUESTION
I am working on a app built with MSVC 2019. In the past, I was able to view structure members in the "Variables" window while debugging (by clicking on the '+' sign). This week that stopped working: the Variables window just shows an address in hex). I've not (knowingly) changed any build settings but the problem persists. No changes to source code.
Any ideas about what I'm doing wrong?
I've tried:
- Delete Debug subdir & rebuild all
- Checked: Settings->C/C->General->Debug Information Format: Using /Zi, but tried all other options.
- Checked: Settings->C/C++->Enable Browse Information: YES
- Checked: Varibles: Hexidecimal display NOT checked.
Details:
Include file dir specified by Settings->C/C++->Preprocessor->Additional include directories:
Compiled with MSVC v2019
Dell Optiplex Win10/64
UPDATE 03/25/2021
- So far, this problem only happens when I build an SSL/TLS app. I've tried several SSL packages with same result (GitHub OpenSSL, FireDaemon, Shining Light, etc.). I include ssl.h from each package.
- Members of structures defined within my app are shown correctly
ANSWER
Answered 2021-Mar-16 at 07:37QUESTION
I have tried to produce diagnostics plots for glmmTMB
models using package DHARMa
without success. Example 1.1 in this vignette gives:
ANSWER
Answered 2021-Apr-23 at 22:01It looks like this is a bug that was present in R <= 4.0.1. From the R NEWS file for version 4.0.2:
on.exit() now correctly matches named arguments, thanks to PR#17815 (including patch) by Brodie Gaslam.
I have attempted to fix the glmmTMB code so it works around the bug.
You could try
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