Linked Questions

21
votes
4answers
9k views

Getting the interpolation function from a list plot

I have conducted a chemistry experiment and obtained a list of concentrations of a reactant against time. I plot a graph of this using Mathematica's ListPlot ...
21
votes
3answers
2k views

Monotone, periodic 1d-interpolation with continuous 1st order derivative

Lately, we had this thread about interpolation where J. M. linked two interpolation methods. The background for my question is that I estimated a parameter in polar coordinates with dependence on the ...
31
votes
1answer
1k views

Visual representation of a Ranking over time (image provided)

[Disclaimer: I initially posted this question on stackOverflow 2 months ago and think it might be better suited for this forum (link to original question)] The graph below shows a ranking of ...
4
votes
5answers
660 views

Interpolation gone awry?

Here's a simple example of an interpolation function that seems to me to have gone awry. Maybe someone would be so kind as to tell my what's going on with this? ...
5
votes
3answers
1k views

How to (correctly) interpolate an array of points?

I'm trying to obtain an interpolation function for points of an x^(-5) function (which goes to infinity at x = 0). ...
5
votes
4answers
879 views

Interpolation of unevenly spaced data, is it possible?

I need to interpolate data, that consists of many points in the beginning and a few in the end of the interval, like in the following example: ...
0
votes
2answers
2k views

Numerical derivative from data points

I want to take the second derivative of a set of data points (at the point $x = 0$). Let's assume that this set looks like that ...
6
votes
1answer
1k views

How to avoid creating negative values when using Interpolation?

I'm having some problems with Interpolation. I'm trying to interpolating some measurements data into mathematica. But using Interpolation will create some negative data, which is actually not possible ...
2
votes
3answers
113 views

How to get a plot with more precision in the data points?

Working with other software called SolidWorks I was able to get a plot with a curve very close to my data points: I tried to get a plot as accurate as this, but using the ...
0
votes
1answer
244 views

Interpolating a function with splines

I would like to interpolate the following function ...
0
votes
1answer
141 views

Interpolating data while imposing the behavior of a cumulative distribution function

I would like to interpolate a data set which represents a curve of an empirical cumulative distribution function (CDF). Hence, the y entries are between 0 and 1, continuous and non-decreasing, and at ...
2
votes
0answers
81 views

A problem when interpolating the data

I have some data in a form data = {{x,y,f[x,y]},...}, where f[x,y] takes only positive values. When I try to interpolate it, <...