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Hi All, I am a new user to LabView and this is my first project using it. The project requires me to read a massive spreadsheet from Excel into LabView and then allowing the user to do the following: - Select which columns to plot against the first column - Use a cursor to select a portion of the spreadsheet: the Vi will then average the selected data by column (in other words, if the user selects data across multiple columns, the program will average data in each column separately). Then write the averages to the csv file. So far, I have the spreadsheet read into a table as strings (because the first row of the spreadsheet is words). I have spent a lot of time searching how to allow the user to select data on the table to perform operations on, but to no avail. I am hoping you guys could give me some insight on how to tackle this project.
2 plots stacked in 1 chart with 3 traces each?
Gan Uesli Starling posted a topic in LabVIEW GeneralGranted that I could do this very thing with two single-stack charts of 3 traces each. I could do that... However... What I'd very much prefer is to have 1 chart with 2 stacks and 3 traces on each. So my question is...Can I do that? And if so, how can I do that? I'll tell you what this is for... I have a test stand measuring pressure and flow. I want to show the current value for each in a separate, vertically stacked plot, with also the current max and min limits as dotted red lines. The settings are progressive steps, each with a different max and min for both those values. I want the operator to not have to think, only just look at the cart, and to know in an instant if it is performing amiss. Also an aid to troubleshooting. Save me a lot of headaches and interruptions down the road.
An implementation of the XY Chart
ijustlovemath posted a topic in Code In-DevelopmentI just recently had a need for XY chart functionality in my application. The example NI has on its website was a little too simple, as I needed support for multiple curves. I've attached the VI and some examples, would love to hear any critiques you have. XYChart.zip
XY-graph: programmatically add point "labels"
machyaer posted a topic in User InterfaceHello to everybody, I'm wondering to find a solution to this problem... I have an xy-graph and I would like to insert programmatically some text label connected to certain x-y coordinates of the plot itself. Does somebody know if it is possible? ... and have an idea on how to implement such behaviour? Thanks Max
Read large data from text file and plot
hhtnwpu posted a topic in LabVIEW Generalhi, I want to read and process large data(nearly 100 million rows,the file size over 500MB), the original format of the file is .txt, through rename as .dat we get the binary file. The attachment is my vi. When the file is larger than 1 million lines(the data is singal Column), there is a wrong with "the memory is full".I want to read the data and plot a graph in the time domain, on the graph I can see the detail by zoom tools; and then do some anlysis about FFT and Statistics .I don't know how to do decimation in chunks .another thing ,maybe the memory release is also important. can you help me? thanks! the data from a dynamic strain test，the sampling rate is 10K/s。if we can get the whole result use a little data decimation from a chunk ,when we zoom some detail, such as in one chunk, we can get the whole data on the graph without decimation?thanks! read data.vi