histogram

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merging several data.frames of different column length and manipulating columns

I am using 9 files with different data (proteins per tissue data). Each file represents a different tissue and has values of proteins expression (as numbers). I am trying to merge the data into one da[详细]

2023-03-08 09:08 分类：问答
Matplotlib histogram with log Laplacian PDF

(be sure to check out the EDIT at the end of the post 开发者_C百科before reading too deeply into the source)[详细]

2023-03-07 00:43 分类：问答
Improving Speed of Histogram Back Projection

I am currently using OpenCV\'s built-in patch-based histogram back projection (cv::calcBackProjectPatch()) to identify regions of a target material in an image. With an image resolution of 640 x 480 a[详细]

2023-03-06 21:25 分类：问答
R question about plotting probability/density histogram the right way

I have a following matrix [500,2], so we have 500 rows and 2 columns, the left one gives us the index of X observations, and the right one gives the probability with which this X comes true, so - a ty[详细]

2023-03-06 06:49 分类：问答
Superimpose gaussian shape on data plotted as histogram

does someone know as superimpose a gaussian curve over different bins of a histogram plot? My aim is to highlight the trend of data. Thanks. Lucio[详细]

2023-03-06 00:24 分类：问答
CvSVM questions

Some questions of using the opencv CvSVM What kind of svm is it using? Is it using svmligh开发者_如何转开发t? OpenCV2.2 has svmlight, but I cannot find much references to it.[详细]

2023-03-05 19:51 分类：问答
Frequency Analysis in Python -Print letters with frequency rather than numbers with frequency

s=array1 #user inputs an array with text in it n=len(s) f=arange(0,26,1) import collections dict = collections.defaultdict(int)[详细]

2023-03-04 20:11 分类：问答
UPDATE:Sorting a list from a for output from highest to lowest in python

for x in letters: frequency[x]+=1 for x in frequency: print x,frequency[x],frequency[x]/float(n) Sorry but I\'m fairly new to programming and everything and I\'m trying to get the output to be sorte[详细]

2023-03-03 21:50 分类：问答
Arbitrarily re-ordering histogram columns in R

I would like to know how I can re-order the columns of a histogram in a way that makes sense to my data. This example illustrates what I\'m trying to do.[详细]

2023-03-03 14:06 分类：问答
Plot Histogram in Python

I have two lists, x and y. x contains the alphabet A-Z and Y contains the frequency of them in a file.[详细]

2023-03-03 13:01 分类：问答