Questions tagged [histograms]

Tag for questions about building histograms in Mathematica. Apart from generating the graphics, and prettifying them, this also includes methods to extract their data.

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2
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2answers
507 views

How to create a custom histogram (normalized)

Let's create some sample data ...
2
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1answer
113 views

histogram of RandomInteger is wrong at boundary

The problem is easy to reproduce. Try Histogram[RandomInteger[{-205, 205}, 10000]] I got What is wrong with the boundary bar? They supposed to be the same ...
2
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2answers
851 views

How can I get Histogram to show the number of elements in its bins?

I'm just using Histogram[data, 50]. All the examples on the Histogram help page show show the number of elements when the cursor ...
2
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2answers
215 views

Extracting counts of contiguous zeros and ones from a binary array

I'm a novice with Mathematica, but you guys have been very helpful to me in the past. I have a binary array [100, J repetitions] consisting of zeroes and ones. I'd like to extract a histogram of the ...
2
votes
1answer
376 views

How do I create a histogram out of this datastructure: x[i] = value_i?

Here is my SSCCE: a[1] = 2; a[2] = 3; a[3] = 6; Histogram[a] This throws and error though. Here are my questions: What kind of data type is a? Is it an Array? ...
2
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2answers
190 views

Creating a histogram using custom data

Let's consider the following simple data set ...
2
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3answers
327 views

Finding where maximum of histogram occurs

If I have made a histogram of some data. How can I find out at which x-bin position the maximum occurs? ...
2
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2answers
308 views

Histogram distribution

Imagine the following data: data = {-0.7, -0.5, -0.2, 0.1, 0.4, 0.5, 0.9, 1.1, 1.2, 1.3, 1.5, 2.1} From that I make a ...
2
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2answers
439 views

Easy way to create an histogram with given heights? [closed]

What is the easiest way to create an histogram with the heights of each bin already determined? I read all the support page on histograms but I don't understand if there is a way to create an ...
2
votes
1answer
190 views

Get histogram of number of vertices per component of graph H

I have a huge graph with ~8k vertices and ~1k components. I want a histogram showing the number of vertices for each component. How do I do this? EDIT: I'm trying ubpdqn's approach, but not gettting ...
2
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2answers
794 views

How to interpret an image histogram and plot histogram3D for an image?

I'm really finding many ambiguities in how I really should interpret the histogram of an RGB image? I could understand what the height denotes, but did not understand how the pixels get plotted on a ...
2
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1answer
616 views

Dual Axis Histogram

I'd like to plot two histograms on top of one another, but they have very different scales. Is it possible to plot a histogram with two y-axes, similar to the custom function found here for plots?
2
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1answer
460 views

Making a histogram of a user defined random variable

Suppose I want to generate a histogram of $n$ trials a slightly complicated random variable in Mathematica. Is there an easy way to do this? For instance, to make a histogram of a normal variable one ...
2
votes
3answers
2k views

Make a histogram by giving the range and height of each bin one by one

I got the data of each bin by measurements like {start, end, height} and I want something like this picture: I have no other data for the ...
2
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2answers
400 views

How do I generate a 3d histogram of runs

This question is an extension of the question I asked here Histogram of runs. What I would like to do now is generate a Histogram3D that has the run duration on the x axis and the mean level on the ...
2
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2answers
49 views

BarChart: First Bin centered at 0 instead of 1

I want to plot an overlapped graphic comparing the experimental and theoretical data of the number of counts in a given time (beta decay), so I show them in a histogram. Because of sometimes the ...
2
votes
3answers
201 views

Custom 3d histogram

so I wondered if there is a way to use histogram list such that it doesn't bin in quadrat mode, but given a set of 3D points, could bin over a tessellation of some regular tetrahedrons/hexagons/...
2
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1answer
334 views

Is it possible to have histogram in LogLog scale?

Histogram[data,"Log"] will generate an histogram with a log scale on the x axis, but I need a ...
2
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3answers
218 views

How to transform a 3D list to a 2D list?

I want to apply the command Histogram3D to an image.The image data is {{r1,g1,b1},{r2,g2,b2}...} And the input of ...
2
votes
1answer
2k views

Weird vertical line when trying to plot a histogram [duplicate]

I'm trying to plot a histogram of a few data points and overlay a plot on it (it's a fit of a geometric distribution to my data). The weird thing is that a vertical line appears always next to the ...
2
votes
1answer
370 views

How to extract the bin width from a Histogram made with an automatic binning method?

I am using the Scott binning method with Histogram and Histogram3D to plot some data. How could I find out the bin width chosen ...
2
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1answer
2k views

How do I overlay a histogram with a plot of CDF?

...
2
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2answers
83 views

Usage and meaning of “ProbabilityHistogram”

When doing a classification one can determine the ClassifierMeasurements to get Information about the classifier. I now wanted to get a histogram of the computed probabilities for a classifier. Maybe ...
2
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1answer
69 views

Confusion about Predict Model NameAge

Predict["NameAge", "Claire"] 8 distribution = Predict["NameAge", "Claire", "Distribution"] dataRaw = distribution[[2]] <...
2
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1answer
108 views

Histogram range of bins

Mathematica misrepresents data with Histogram by choosing "arbitrary" range in its bins. For example the command: Histogram[Table[RandomReal[], {100000}]] Gives ...
2
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1answer
113 views

Histogram with “PDF” option with strange values on y-axis - Interpretation? [duplicate]

Here's a working example of what I see: ...
2
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1answer
207 views

Normalizing smoothhistogram curves

I'm looking for a way to get two smooth histogram curves to have the same max height. The plots are usually scaled by area or something, however, the only way I've been able to find that works is a ...
2
votes
1answer
214 views

SmoothHistogram binning and “Intensity”

I'm having trouble with the way SmoothHistogram handles bins. At the end of the day, I want to express the vertical axis ticks in terms of the normalized values of the bin counts. This can easily be ...
2
votes
1answer
365 views

How can I use Histogram and Histogram3D on an image?

I have a .jpg image named r. I am using the following code to plot a histogram: ...
2
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1answer
269 views

Display vertical histogram alongside a list plot [duplicate]

Suppose I have some data ranging from -xRange to xRange: ...
2
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3answers
200 views

How to create a 3-d histogram from bivariate frequency data

I am using Mathematica 9, and have a data set ...
2
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1answer
173 views

Distribution of max of partial sums of normal distributions

I was surprised not to find this question already answered: if I take the maximum of the partial sums of n normal distributions, what is the resulting ...
2
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2answers
182 views

How to get the number of entries of histograms in the legend?

I plot three histograms (originating from a large Dataset ds) in one graph ...
2
votes
1answer
195 views

Custom SmoothHistogram3D

I decided to make my own SmoothHistogram3D function because I wanted to be able to specify my own bin sizes and not rely on their distribution functions so taking a cue from this answer and bringing ...
2
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4answers
72 views

Creating custom values for a histogram

Let's consider the following test case ...
2
votes
1answer
295 views

Histogram based on pre-binned data (center of a bin given) - bin size not equal

I have the following problem. I have a pre-binned list that I want to plot. Here is a shortened example: ...
2
votes
1answer
94 views

Fitting an equation to data set, am I doing this right?

I have a large data set of different values of time. I want to make 1) a histogram 2) fit an exponential function of form A+B*exp(-t/b) from the data To my understanding, this is how I'd do it <...
2
votes
2answers
139 views

Creating a custom histogram

Let's create some sample data ...
2
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2answers
174 views

Histogram does not compute

I have a strange problem I haven´t had so far. I have a list of 16 lists of Integers and Rationals and want to show the 16 Histograms. Problem: The Histogram for the second list is not shown, the ...
2
votes
1answer
203 views

Rescaling the counts for a DensityHistogram

I have the following problem: I need to rescale the counts given to DensityHistogram, meaning that I want to multiply the total counts per bin by a certain number (...
2
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1answer
727 views

ListPlot with log scale in x axis

This is the list with the points I will use ...
2
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2answers
218 views

Best way to include a “singularity” in a SmoothHistogram?

I have a dataset like this: data = {0,0,1.1,1.3,0,0,3.4,0,0,2.3,0,0 .....} You can imagine that data is generated from a ...
2
votes
1answer
404 views

How to make a cumulative time plot?

So I'm working with this data set where there is just one input(a date and time) per line in a .csv file. I've let Mathematica understand the input using "DateStringFormat". The time looks like Year-...
2
votes
1answer
31 views

Find the Kernel distribution over an already known histogram

I have an estimated distribution over a parameter, however, the distribution is not continuous, and InterpolatingPolynomial cannot estimate my distribution good ...
2
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1answer
107 views

Importing data multiple times from the same file

I have a large data file (.txt) with bivariate data in the following form x1,y1 x2,y2 x3,y3 . . . xn,yn ---------F 0 x1, y1 x2, y2 . . . xn, yn --------F 1 . . . ...
2
votes
1answer
332 views

Histograms of gray scale images

I have a large set of subsequent 8bit gray scale png images (50 Hz). They show the noise of a CMOS camera, with the lens covered. A subset of 50 images is available here: https://goo.gl/Sa3P9P I ...
2
votes
1answer
238 views

Histogram scale error when using DistributionChart

I'm a novice Mathematica user that is having some problems using the HistogramDensity function in a DistributionChart. My observations are heavily skewed to one category and the height of the other ...
2
votes
0answers
56 views

Plot of a histogram is exported with wrong ticks if log-transformed data are used

I've generated a histogram of my data, using their log values, and exported the resulting plot as pdf. To my surprise, the ticks in exported plot were replaced by the logarithm of the ticks in the ...
2
votes
0answers
195 views

How to create 2D ImageHistogram?

Using ImageHistogram I can find the frequency of each color value in an image. Applying the same, I can have a histogram of its gradient values. I wish to combine these two on a log scale such that X -...
1
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2answers
121 views

Why aren't CirclePoints[] evenly distributed? [closed]

If you run something like this; ...

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