histogram

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How to loop over histogram to get the color of the picture?

In this answer about detecting the color of an image olooney said that \"loop over the histogram and take the average of pixel color weighed by the pixel count\".[详细]

2023-04-07 14:32 分类：问答
How to plot histogram of x and y values?

Today I want to learn a little bit about the R statistical programming language. I\'m not finding the tutorials to be helpful yet.[详细]

2023-04-05 03:27 分类：问答
date axis with fixed limit for barplot and/or hist

Given a list of dates dates <- data.frame(foo = c开发者_JAVA技巧( \"2009-03-15\", \"2010-04-15\",[详细]

2023-04-01 17:26 分类：问答
Plot histogram with specified patterns for different categories in GNUPLOT

I\'m now gonna plot a 10-category histogram wit开发者_StackOverflowh GNUPLOT. Since number of categories is relative large, I want to specify patterns for different categories myself instead of applyi[详细]

2023-04-01 11:35 分类：问答
Histogram of large matrix in R

I have a large, square sparse matrix in R (about 30M real numbers), and I\'d like to see the distribution of its values.[详细]

2023-03-31 06:45 分类：问答
determine mean value on 0Y histogram axis

I am drawing histograms using hist command as below: hist(plikTVDI, ylab开发者_运维问答=\'częstość występowania\',[详细]

2023-03-30 16:05 分类：问答
Java open source histogram

I need a histogram class for a project. I am not interested in the graphical representation, only in the \"book keeping\". Ideally, it should be able to also give me cutoffs( for example, 80% cutoff s[详细]

2023-03-29 18:21 分类：问答
Python/Pyside: Create Image Histogram

What is the most effective way to create an image (QImage) histogram in PySide? My test image is 1,9MB, 3648x2736px, jpeg photo[详细]

2023-03-29 02:08 分类：问答
Getting black and white intensity values from a histogram

I am trying to get black and white histogram data from acolor image. How开发者_如何学Cever the current setup I have with my histogram only shows me color data I\'m sure that it\'s something that I hav[详细]

2023-03-28 05:53 分类：问答
fast computation of histogram on a grid

I have a greyscale 200x200 image and I would like to compute the histogram of the intensity for each 8x8 window in the image. How can I compute that fast? I use for loops n开发者_如何学JAVAow but it i[详细]

2023-03-28 02:08 分类：问答