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Questions tagged [extrapolation]

extrapolation is a method of constructing new data points outside the range of a discrete set of known data points

Extrapolation is a method of constructing new data points outside the range of a discrete set of known data points.

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Mortality table | Extrapolation of rates to older ages

I am currently working on the construction of an experience mortality table. My problem is with the methods of extrapolation of the smoothed rates that I have obtained. I'm really struggling to implement an R code that will allow me to extrapolate…
Philippe BROU
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Advanced interpolation with xarray along one line

I would like to interpolate and extrapolate the air values along the red line with xarray. I was following the example in the documentation, but I'm missing something, I think my code is interpolating for the entire image? I only want for the red…
JCV
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Extrapolate 'Y' vs 'X', with respect to 'id/group' till 'Y' drops to zero

I have certain data that needs to be extrapolated for 'Y' vs 'X', corresponding to every 'id/group' till 'Y' drops to zero. Here, 'X' = cycle and Y = 'Covariate' However, the last value of 'Covariate' for every 'id' is different. These are my…
NN_Developer
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Is there a way to extrapolate a already existing mesh (a surface for example) and extend it?

The context is that I have 2 objects (3d objects, meshes), and I want to split one using the other, except that in some cases the cutting object may be a bit short and don't fully intersect with the one to cut. I want to find a way to extrapolate…
Mouhcine BITI
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Romberg Method (Richardson Extrapolation)

I was tasked to write a MATLAB function that integrates the function from x = a to x = b. However, in the code that I've made, it shows the order and displays an error message: Unrecognized function or variable 'estimates'. This is what I…
Lea
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QGIS contour plugin - extrapolate to given range

I use Contour plugin in QGIS to produce a filled contour map (consecutive value ranges are marked by colours). The map covers only the area between input points with assigned value of interpolated data. I need my map extended to a larger area,…
A.P.
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Struggling with Python extrapolation

I have a recorded data from lab equipment. In several cases I would like to interpolate and extrapolate from recorded data. I will be using I_id and I_iq as my main control variables. I have tried many different variations to get this working but I…
seaanf
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Extrapolate Animation Curve (Endless game balancing curve)

I need a curve editor to make balancing of endless game then I tried to use AnimationCurve. I need to set a curve to a certain range ex. [0;1] and if I want a value over 1, the result of the Evaluation have to extrapolate the curve. I want to be…
Timothée Dautrême
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eRm package - RM function - extrapolation

I estimated a Rasch model with the eRm-Package via the RM() function in R with a data set (w_demo) that contains four binary items (W11_s:W14_s; 0/1) and 1510 cases. w_demo <- rent21 %>% select(W11_s:W14_s) # Rasch-Model (CML-estimator,…
Daniel Moosdorf
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How can I extrapolate accurately using interp1 in Matlab?

I want to improve my B(H) curve. I want to have a smooth curve without any break in the middle. The break in the curve is due to the extrapolation made to reach 10^4 A/m (where the slope will become equal to a certain valuemu0). Is there a better…
hakim
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format Error in scipy interpn when passing grid points and values from griddata interpolation of sparse data

Hi and thanks in advance for your time, I'm trying to use scipy interpolation/extrapolation from data with 3D coordinates + value(accuracy) The purpose is to use the interpn as the function to later run in a global optimizer to try and speed up a…
Nuno Bártolo
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Extrapolating time series data into the future by repeating/scaling existing values

I have hourly data on electricity consumption for a specific day. I would like to use this data to "predict" the hourly electricity consumption for the following days. The value for the following day should be the value from the same hour the day…
Malte
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How to use approxExtrap (Hmisc package) with dplyr?

I'm trying to perform linear extrapolation and can't figure out the correct notation to apply the approxExtrap function from the Hmisc package. I have seen some examples, but none that I've been able to apply. I have been able to use the normal…
dd_data
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Extrapolate dataset with limited data points and add all values to new dataset

I have a dataset with very limited data points. x<- c(4, 8, 13, 24) y<- c(40, 37, 28, 20) df<- data.frame(x,y) Now I want to extrapolate this data, creating a dataset where the value of y will be given for every value (no decimals) of x between…
Laura Schefold
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How to train a machine learning model in python including several target variables

I am trying to build a machine learning model in python. I used pytorch and sklearn to make the model. My model is a bit complicated: I have one input feature but several target variables. My target variables are values making a curve and I used…
Ali_d
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