histogram

I have to plot 10 frequency distributions on one graph. In order to keep things tidy, I would like to avoid making a histogram with bins and would prefer having lines that follow the contour of each histogram plot. I tried the following [counts, bins] = hist(data); plot(bins, counts) But this gives me a very inexact and jagged line. I read about ksdensity, which gives me a nice curve, but it changes the scaling of my y-axis and I need to be able to read the frequencies from the y-axis. Can you recommend anything else? craigim You're using the default number of bins for your histogram and, I

test <- rep(5,20) hist(test,freq=FALSE,breaks=5) The vector contains 20 times the value 5. When I plot this with freq=FALS E and breaks=5 I expect to see 1 bar at x=5 with height = 1.0, because the value 5 makes up 100% of the data. Why do I instead see 1 bar that ranges from x=0 to x=5 and has height = 0.2 ?? Ben Bolker hist plots an estimate of the probability density when freq=FALSE or prob=TRUE , so the total area of the bars in the histogram sums to 1. Since the horizontal range of the single bar that is plotted is (0,5), it follows that the height must be 0.2 (5*0.2=1) If you really want

How can i overlay an exponential distribution on a histogram of time intervals? The histogram looks like an exponential distribution. When I try to create the histogram in a similar way to superimposing a normal curve I get the following: Error in xy.coords(x, y) : 'x' and 'y' lengths differ I can create the histogram on its own which has an x axis from 0 to 70. And I can create an exponential distribution curve on its own but its x axis goes from 0 to 1. I am using hist(t) where t is a list of times in seconds for the histogram and curve(dexp(x,rate=0.09)) for the exponential distribution.

I want to draw a histogram and a line plot at the same graph. However, to do that I need to have my histogram as a probability mass function, so I want to have on the y-axis a probability values. However, I don't know how to do that, because using the normed option didn't helped. Below is my source code and a sneak peek of used data. I would be very grateful for all suggestions. data = [12565, 1342, 5913, 303, 3464, 4504, 5000, 840, 1247, 831, 2771, 4005, 1000, 1580, 7163, 866, 1732, 3361, 2599, 4006, 3583, 1222, 2676, 1401, 2598, 697, 4078, 5016, 1250, 7083, 3378, 600, 1221, 2511, 9244, 1732,

In Excel 2010, I have a list of values in column A and a bin size is specified in B1 . This allows me to create histograms with N bins using this formula: {=FREQUENCY(A:A,(ROW(INDIRECT("1:"&CEILING((MAX(A:A)-MIN(A:A))/B1,1)))-1)*B1+MIN(A:A))} The only problem is that I need to select N cells and apply this formula to get N bins to be used as data source for my bar chart. Is it possible to skip this step? E.g. Is it possible to use this formula in a single cell - somewhat modified - so that when used as data source, it is interpreted as N cells, producing a nice histogram with N values? Thanks.