interpolation Questions
2
Solved
I like to interpolate a time series, so that the timestamp is exact 0.1 Hz. So the first step maybe would be something like
library(tidyverse)
library(zoo)
options(digits.secs = 3, pillar.sigfig ...
Osteoma asked 18/9 at 14:26
2
A recent immigrant to Python and scientific computing with Python. This is a question to avoid any duplication of code that might already exist.
I have a field that is sampled as a function of x a...
Conversion asked 7/12, 2012 at 23:47
4
Solved
I have a DataFrame where the index is NOT time. I need to re-scale all of the values from an old index which is not equi-spaced, to a new index which has different limits and is equi-spaced.
The fi...
Millrace asked 2/1, 2018 at 22:55
6
I am trying to check a table for specific data and if i found the data it will display the data. I did that with VLOOKUP. But now if the data is not in the table i want to interpolate between two s...
Gauthier asked 18/3, 2017 at 16:58
5
Solved
We can do a slerp interpolation between two quaternions like this:
quat slerp(quat q1, quat q2, float t) {
float angle = acos(dotProduct(q1, q2));
float denom = sin(angle);
//check if denom is z...
Sthenic asked 16/7, 2020 at 20:35
2
Solved
I would like to use a resource file to send an email. In my resource file I used a variable "EmailConfirmation" with the value "Hello {userName} ... "
In my class I used:
public static string mes...
Efferent asked 17/2, 2018 at 19:46
2
I am getting some errors when interpolating with RBF. Here is an example in 1D. I think that it has to do with how close my y values are to each other. Is there any fix for this?
import numpy as n...
Forklift asked 29/6, 2019 at 19:17
14
Solved
Is there a quick way of replacing all NaN values in a numpy array with (say) the linearly interpolated values?
For example,
[1 1 1 nan nan 2 2 nan 0]
would be converted into
[1 1 1 1.3 1.6 2 ...
Nardi asked 29/6, 2011 at 9:58
1
Solved
The class scipy.interpolate.interp1d has a message that reads:
Legacy
This class is considered legacy and will no longer receive updates. This could also mean it will be removed in future SciPy ve...
Vitta asked 5/1 at 13:52
2
Solved
I am using mat-table-exporter npm module within Angular 9 to export mat table components.
I am able to export it correctly with test as the name of the exported file.
Previous working code:
<mat...
Claxton asked 14/1, 2021 at 0:17
3
Solved
For skeletal animation using colladas, I need to linearly interpolate between 2 matrices. I saw somewhere that I can use quaternions to interpolate between matrices, but that only works for the rot...
Loan asked 3/1, 2015 at 4:4
5
Solved
I need the exact Python equivalent function of this Matlab function in order to interpolate matrices.
In Matlab I have:
interp2(X, Y, Z, XI, YI)
while in Scipy I have:
interp2d(X, Y, Z).
I...
Delayedaction asked 13/7, 2012 at 10:7
6
Solved
Does T-SQL support Interpolated String?
Let's put up this example:
SET @query = 'SELECT ' + @somevariable + ' FROM SOME_TABLE'
I want to be able to do something like that:
SET @query = 'SELECT...
Unblinking asked 29/1, 2018 at 6:5
2
Solved
I've an image of about 8000x9000 size as a numpy matrix. I also have a list of indices in a numpy 2xn matrix. These indices are fractional as well as may be out of image size. I need to interpolate...
Bred asked 29/3, 2019 at 5:12
7
Solved
Please have a look at the following example:
http://jsfiddle.net/MLGr4/47/
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
img = new Image();
img.onload = func...
Monkhmer asked 25/7, 2013 at 14:51
4
I am seeking in R a 2D version of stats::approxfun() that can generate an interpolation function f(x,y) from an (x,y,z) dataset. I have not found one in the package akima or elsewhere.
Clench asked 18/1, 2016 at 5:7
2
Solved
I'm looking for a way to do a simple linear interpolation between two numpy arrays that represent a start and endpoint in time.
The two arrays have the same length:
fst = np.random.random_intege...
Kreis asked 4/4, 2016 at 9:24
3
Solved
This is my first question on stackoverflow. Go easy on me!
I have two data sets acquired simultaneously by different acquisition systems with different sampling rates. One is very regular, and the...
Brasserie asked 22/10, 2014 at 21:6
2
Solved
Having a cloud point shaped like some sort of distorted paraboloid, I would like to use Delaunay Triangulation to interpolate the points. I have tried other techniques (f.ex. splines) but did not m...
Rondel asked 23/12, 2014 at 14:48
9
Solved
I would like to perform blinear interpolation using python.
Example gps point for which I want to interpolate height is:
B = 54.4786674627
L = 17.0470721369
using four adjacent points with known c...
Phalangeal asked 28/12, 2011 at 21:29
6
I'm looking to do a linear interpolation of a irregularly sampled function z(x,y) based on a Delaunay triangulation. Say I have a hill for which I have obtained a Delaunay triangulation:
I know...
Beckmann asked 12/9, 2011 at 14:1
9
Solved
In Ruby you can reference variables inside strings and they are interpolated at runtime.
For example if you declare a variable foo equals "Ted" and you declare a string "Hello, #{foo}" it interpo...
Devoice asked 6/12, 2008 at 15:24
3
Solved
Sample program that upscales 2x2 matrix to 5x5 using bilinear interpolation.
Result that OpenCV produces has artifacts at the borders for such simple case.
gy, gx = np.mgrid[0:2, 0:2]
gx = np.flo...
Congregate asked 24/4, 2017 at 21:57
3
Solved
I have an irregular (non-rectangular) lon/lat grid and a bunch of points in lon/lat coordinates, which should correspond to points on the grid (though they might be slightly off for numerical reaso...
Jean asked 2/10, 2015 at 14:9
5
Solved
Users, I'd like to have some tips for a ternaryplot ("vcd").
I have this dataframe:
a <- c(0.1, 0.5, 0.5, 0.6, 0.2, 0, 0, 0.004166667, 0.45)
b <- c(0.75,0.5,0,0.1,0.2,0.951612903,0.9181034...
Oruro asked 4/6, 2012 at 9:50
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