# Questions tagged [smoothing]

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### Calculate the mean value from point inside a 2D contour

I saw a question about creating contour lines over a smoothdensityhistogram plot. It really help me to create this kind of graphs. I want to ask if is possible to extract only the points inside a ...
310 views

### How can I prevent conversion of a SparseArray to a DenseArray?

The Problem I'm trying to implement an efficient Whitker-Eliers smoother in Mathematica. In Matlab, this is a few lines of code (taken from the SI of the above paper): ...
1 vote
55 views

### Problem with dividing two functions

Here is my code ...
1 vote
109 views

### Smooth out numerical fluctuation at known point

I have the following function ...
1 vote
138 views

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### Listdensityplot sort of smooths the data when I don't want it [duplicate]

I tried plotting a densityplot and it gives me an image what I expected. like this but after a split second it kind of updates itself to why is its dynamically smoothing itself? I want the first one....
144 views

### Moving average over a dataset

I have this data set in .csv and I imported them to mathematica to analyze them using Import function. Now here I have only shown a part of the dataset just to give an example of how it looks in Excel....
1 vote
160 views

### Plot two smooth curves from a set of data with interlaced points

I have a set of data which was obtained from numerical calculation. The plot of the original data is as follows (the data is 26Kb only). ...
213 views

### How can I smooth sharp edges in ListDensityPlot

I have this data and there are some zigzag behaviors around the sharp edges ...
1 vote
305 views

### 2D kernel density estimation (SmoothKernelDistribution) with bandwidth estimation: what are the values that Mathematica chooses?

Mathematica has built in bandwidth estimation including the rules Scott, SheatherJones and ...
490 views

### Smoother boundaries between components of segmented image

I'd like to use boundaries between components of a segmented image to create a mesh for finite elements, as described in Mesh for Images for three materials and meshes with multiple regions from 2D ...
58 views

### How to calculate smoothing constant alpha in ExponentialMovingAverage?

I'm trying to use ExponentialMovingAverage on a time series, but I'm not sure how I'm supposed to calculate the smoothing constant. I read that the appropriate ...
385 views

### Histogram (automatic binning)

There are different methods for choosing widths of bins for a histogram, like Freedman-Diaconis rule. In Mathematica, without choosing a specific method, with the command ... 153 views

### How to smoothen a contour plot?

I want to smoothen the following contour. ...
1 vote
497 views

### How to smooth data

I have a list of the form dataTosmooth={{a,b,c},....} where a and b are coordinates and c is the data to be smoothed. In other words, smooth dataTosmooth[[All,3]] along dataTosmooth[[All,{1,2}]]. What ...
366 views

### Approximate the piecewise constant with a smooth function

Let us first define a two regions as follow : inner=1;outer=2; reg1 = Disk[{0, 0}, inner]; reg2 = Annulus[{0, 0}, {inner, outer}]; glass=1.5;air=1; Now let's say I ...
2k views

### Smooth Boxcar function (Rectangle Pulse function)

There are some answers on how to get a smooth squarewave function. But I would like to have a smooth boxcar function or rectangle function with 2 different widths.: ...
350 views

### Smoothing an irregular TimeSeries and calculate it's Derivative

I've a data set consisting of two columns, the first column is a date and the second is a numeric cumulative amount. I tried to create a time series, resample it and smooth but I couldn't manage to ...
1 vote
395 views

148 views

### BSpline vs natural spline [closed]

The BSpline in mathematica is defined mathematically here. These BSplines constitute basis for any Spline. But how do I define natural splines in mathematica, i.e. splines that are linear left of the ...
43 views

### RegionPlot with FindMaximum

I don't understand why each time I'm launching this computation Mathematica buggs and I get a message from Windows that the Kernel stopped working... I'm trying to get a map of where the value of ...
1k views

### Catmull-Clark and Doo-Sabin Subdivision Implementations

I want to work on subdivision surfaces. Unfortunately, I don’t have any source code to start with. I need some Mathematica codes for applying Catmull-Clark and Doo-Sabin methods. I would like to ...
305 views

### How to make the ListContourPlot3D smooth and closed?

I am struggling with making my plot in ListContourPlot3D smooth and closed. I have seen so many posts regarding the same issue but in other functions, the solution of which can not be applied to ...
275 views

### Smoothing random data with MovingAverage

If I have this kind of data: ...
519 views

### Changing the averaging window dynamically in a moving average

I have some temperature decay data (2k points) that is very noisy for large time values. I don't want to do much or any smoothing to the data early on, but would like a large window to average over ...
1 vote
45 views

### Smoothing the surface created from a set of points

I have a question about "smoothing" the surface created on the basis of a set of points. I would like to get an effect similar to that from the Documentation Center. enter link description here The ...
65 views

### Smoothen curve in ListDensityPlot [duplicate]

I have a list of points of dimensions (150,101) and I am plotting them in a ListDensityPlot. I am happy with the command and how the data is represented, but I ...
1k views

### Smoothing noisy data

I have this data shown in picture 1 below and I want to filter it. I tried some filters but I couldn't get good results. seems that I didn't choose the best parameters for it. I want to smooth my ...
521 views

### How to find the boundary of a region from a dataset

I have a dataset which supposed to show some regions. For example ...
2k views

### Smoothing 3D contours as post processing

Context Following this question (and great answer!), It would be nice to have a function which also smooths 3D contours plots once they have been done. There are various solutions which involve ...
921 views

### Generic contour smoothing with shading

Context It would be nice to have a function which smooths contours plots once they have been done. There are various solutions which involve smoothing the data before making the contours, but here I ...
180 views

### Smoothing EdgeDetect - image processing

I have to make a program that analyzes the image of saw tooth and later find the function that can describe it (or just part of it). Now I have a problem with smoothing the edges detected with ...
1 vote
168 views

### Smoothing 2-d Functions [closed]

I have a large array of triples (x_i,y_i,f(x_i,y_i)) The the values x_i and y_i are equidistant variables and the function values f(x_i,y_i) are results of a Monte Carlo calculation which contain ...
1 vote
2k views

### Interpolating noisy data

My data looks like this: https://pastebin.com/n59CTB3L Or if displayed in log chart: I want to create an interpolation of the data that would remove most of the noise. What are some good ways to ...
2k views

### How to perform Loop subdivision on a triangle mesh with Mathematica?

(Cross posted on Wolfram Community) Every now and then, the question pops up how a given geometric mesh (e.g. a MeshRegion) can be refined to produce a (i) finer ...
3k views

### How to calculate the first derivative from experimental data

I have a set of experimental data and need to calculate the first derivative. What is the easiest way to do this? Many thanks in advance
156 views

### Reshape interpolated data

I want to reshape/smooth the following data: ...
875 views

### Improve the mesh smoothing procedure

My question is inspired by this answer about meshing with quadrilateral elements. The following functions are my (naive) try of implementing the Laplacian smoothing. I find interior nodes in the mesh ...
172 views

### DistributionChart and kernel smoothing: preventing negative numbers

I am visualising rather scarce data about size distribution of certain objects (here - oil basin areas on continents, to be specific). There is no raw data, but some already processed quantities, for ...
1 vote
1k views

### Interpolating or smoothing list plot

I am currently trying to interpret my FTIR data. But due to a lot of background noise, my spectrum is quite spiky and fluctuating at some points. I want to try to smoothen my function to make the ...
1k views

### How to get a smooth ridge from a binary image

I always have this demand,but Mathematica cannot implement this perfectly for me.For example,I have such binary image ...