LabVIEW
histogram with just some columns of a table
Solved!
@altenbach wrote:
- You still have not explained what kind of histogram you want from ll the columns. Explain exactly want kind of result you would expect from the default data.
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^^
like that one,but the green also has to appear there in E1.....,why i can't see it
i made some change on the vi
OK, so you just want a bargraph with two bars per x value. that has nothing to do with a histogram. See my confusion? (A histogram is a statistical tool for data reduction. You are graphing all the raw data)
Your code was way too convoluted and inefficient, so here's a quick rewrite. See if it can point you in the right direction. As I said, I don't have your office toolkit, so I added a listbox to select a candidate and graph the result. You can leave that code out). All your file operations belong into the FOR loop in the upper right.
Notes on your code:
- You are calculating the averages N times. It is sufficient to do that once in a seperate loop.
- Why do you need two identical array diagram constants. One is sufficient. Branch the wire.
- Building an array with one row, transpose it into an array with one column, then indexing out selected columns seems convoluted. Simply leave it as a 1D array and index out elements. same difference!
- One of your inner loop does absolutely nothing.
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A histogram is a very special kind of bar graph where the Y value is a count and x is an observation range.
You data has nothing to do with a histogram.
