I have set of value in float (always less than 0). Which I want to bin into histogram, i,e. each bar in histogram contain range of value [0,0.150) The data I have looks like this: 0.000 0.005 0.124 0.000 0.004 0.000 0.111 0.112 Whith my code below I expect to get result that looks like [0, 0.005) 5 [0.005, 0.011) 0 ...etc.. I trie...
I have a continuously generated data (text file) generated by a program on the server. I want to plot the data as a real-time graph just like powergrid does. This was my approach: As the data is generated continuously on the server in a text file, I wrote a PHP script which reads that file(get_file_contents), outputs the data points an...
Histogram -------------------------------------------------------- 1 ****(4) 2 ******(6) 3 ***********(11) 4 *****************(17) 5 **************************(26) 6 *************************(25) 7 *******(7) 8 ***(3) 9 (0) 10 *(1) -------------------------------------------------------- basically above is what my p...
Is there a way to specify bin sizes in MySQL? Right now, I am trying the following SQL query: select total, count(total) from faults GROUP BY total; The data that is being generated is good enough but there are just too many rows. What I need is a way to group the data into predefined bins. I can do this from a scripting language, but...
I have some data stored in a database like this: TableName: faults Table: +------------+--------------+ | fault_type | total | +------------+--------------+ | 1 | 1 | | 2 | 3 | | 3 | 8 | | 4 | 2 | ............................. How am I supposed...
Hi, I want to smooth a histogram. Therefore I tried to smooth the internal matrix of cvHistogram. typedef struct CvHistogram { int type; CvArr* bins; float thresh[CV_MAX_DIM][2]; /* for uniform histograms */ float** thresh2; /* for non-uniform histograms */ CvMatND mat; /* embedded matrix header for array his...
i was assigned to make some changes to a C program written by someone else...i want to understand it first to work on it properly...i came upon a function that generates the histogram of ASCII values from a given long string of data. it is something like this. //load the symbols the old data for(int k = 0;k < 256;++k) { sym[k].S...
Is there a javascript library that allows for drawing histograms/graphs over timelines, allow zooming, as well as selecting regions. Something similar to Google's Financial Data Graphs (allows for scrolling, zooming in, as well as selecting ranges) Google Financial Data Thanks. ...
public class Histogram { private int lo_; private int hi_; private int[] frequency_; public Histogram(int lo, int hi) { lo_ = lo; hi_ = hi; int range = hi_-lo_+1; frequency_ = new int[range]; for(int i =0; i <range; range++) frequency_[i] = 0; } public void ReadValue() { Scanner in = new Scanner(System.i...
Here is a question for R-users. I am interested in drawing a histogram with points stacked up, instead of a bar. For example if the data is (1,1,2,1,2,3,3,3,4,4), then I would like to see three points stacked up at 1, 2 points stacked up at 2 and so on. What is the best way to do this in R? ...
I have two questions concerning fitting a gauss curve to histogram peaks. My first question is a very basic one: How can I fit a gauss curve to a entire histogram? Does this only mean that I have to find out and calculate the mean value(µ) and the deviation(ϭ) of the histogram and put them into the formula for the Gauss curve? Would ...
How can I use Jacob to create a graph in a MS Word document? ...
I calculated the histogram(a simple 1d array) for an 3D grayscale Image. Now I would like to calculate the gradient for the this histogram at each point. So this would actually mean I have to calculate the gradient for a 1D function at certain points. However I do not have a function. So how can I calculate it with concrete x and y value...
I've got a series of (x,y) values that I want to plot a 2d histogram of using python's matplotlib. Using hexbin, I get something like this: But I'm looking for something like this: Example Code: from matplotlib import pyplot as plt import random foo = lambda : random.gauss(0.0,1.0) x = [foo() for i in xrange(5000)] y = [foo() for i ...
Hi, I have a 3d histogram in matlab. Is it possible to automatically spin it i.e to get the 3d effects. I want to show it as a video in PowerPoint where the 3d histogram swivels. thanks ...
I've got a 2-D histogram (the plot is 3D - several histograms graphed side by side) that I've generated with the bar3 plot command. However, all the zero values show up as flat squares in the x-y plane. Is there a way I can prevent MATLAB from displaying the values? I already tried replacing all zeros with NaNs, but it didn't change a...
Hi please, any one help me to solve my problem: I am working now in trademark image retrieval system , now I was prepared my database space (i.e I compute more than one color features like color histogram , Mean Color, moment set ...), and I was used the distance measures to retrieve the images which are similar to the query image an...
I've got a list of transaction dates and the user id of the person who made the transaction on that date (just 1 Tx/day allowed). For example: I'd like to create a matrix which shows, as of each date, the number of users who have made 1 transaction, 2-10 transactions, 10-20 transactions, etc. For example (note, the below data doesn'...
I have got all the pixel values (RGB) of a bmp image. After that, how can i plot the histogram of these values?? I am using C language on my project. Can anyone can help me? Thank you. ...
So we have Histograms... Is there any algorithm to generate original image from them? ...