How do I assemble an array based on a button cluster?

I have a cluster of buttons that I would like to use to select what elements to pull from an array of constant strings and output an array containing only the "on" selections. I tried converting the booleans to 0's and 1's, then putting it through a min/max selector. I also tried using the Search 1D Array function. Neither of these worked right. The program ran, but did not output all the strings (nor the correct ones, sometimes), usually limiting itself to 2 elements.
Does anybody have any ideas? Thanks!
Attachments:
three_phase_path_selector.vi ‏19 KB

Hi David,
No problem, a code critique is the best way to learn! Someone will probably critique the code I give you and we will both learn from it, its the great thing about this forum. See below for a different way to solve this problem. And let me know if this code does not solve your problem, as it is possible I missed the boat.
Regards,
Jon
(I am not able to add an attachment to the post right now for some reason... I will try again in a min.)
CLA, CLED, CTD,CPI, LabVIEW Champion
Platinum Alliance Partner
Senior Engineer
Using LV 2013, 2012
Don't forget Kudos for Good Answers, and Mark a solution if your problem is solved.

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How can I create sub-arrays based on the positions of indicies in a separate index array?

Please forgive me if this question is basic or obvious. I am fairly new to LabVIEW and I'm trying to learn as I go along.
I have a 1D array of index values (the number of possible index values is not fixed, but can vary between uses of the application; it could be just {0, 1} on one day and {1, 5, 11, 678} on another) and a 1D array of measurement values (doubles). I'd like to parse the measurement values into sub-arrays for each index, so that if my index array was:
[0 1 1 1 1 5 5 0 5 5 1 0 1 1 5]
and my measurement array was:
[0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.10 0.11 0.12 0.13 0.14 0.15]
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-- jph
Solved!
Go to Solution.

jamespherman wrote:
Thus, I figured it might be possible to generalize this idea and send multiple sets of XY values to an XY graph.
OK, all we need is a trivial modification of what we already have. XY graph data is easiest handled using complex data. Here's a quick rewrite. See if this works for you.
LabVIEW Champion . Do more with less code and in less time .
Attachments:
SplitInGroupsGraph.vi ‏14 KB

How to make some fields mandatory based on radio button selected

Hi,
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Thanks and Regards,
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Hi ,
use this code ,
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How to add byte[] array based Image to the SQL Server without using parameter

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SQL Server binary constants use a hexadecimal format:
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Deleting data from a 2D array based on the id of the second column

Hello
I hope someone can help me. I have come across a hurdle in the programming of my application.
1.
I have a 2D array, the first column of this array contains my data and the second column contains an id, which is either 0 or 1.
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2.
Once I can do this I will want to remove the id column (with the 0’s) from the 2D array and would like to build a new array with only the data from the first column (which may be of different length).
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Best wishes,

Attached is a different approach - you don't need to do any sorting.
The outer FOR loop assumes you have all the arrays available at once. If you are reading a file, modify it accordingly.
You may or may not want the TRANSPOSE function on the final results, depending on what you want to do with it.
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Enjoy.
Steve Bird
Culverson Software - Elegant software that is a pleasure to use.
Culverson.com
Blog for (mostly LabVIEW) programmers: Tips And Tricks
Attachments:
Extract Marked Data.vi ‏40 KB

Get value from the array based on the HashCode

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hashCodes1.get(e.nextElement());
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ok I got it......
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How to adjust a "control array" size

I have a program that creates a digital PWM signal with variable duty cycle. The duty cycle changes every 50 ms, but the overall wave frequency stays at a frequency determined by the user. I have the VI attatched.
My problem is this...I need to be able to control the overall cycle time. This means the size of my array of duty cycles needs to adjust based on the cycle time (i.e. a cycle time of 1 second would require 20 of the 50 ms slots, while a 1.3 second cycle would need 26).
I currently have only 4 slots in my array, meaning the total cycle time is .2 s. I understand how to manually add and remove elements to the array, but I can't figure out how to add a control to it so that the array size changes automatically, allowing much quicker entry of data. As of now I can make it work, it just takes super long to add or delete array elements. The ideal situaton would have a constant control for cycle time divided by 50 that would change the array size.
I can't find any info on this, and I think I even saw a post asking that this kind of feature be added. I'm relatively new to this program.
Thanks
Solved!
Go to Solution.
Attachments:
var_duty_cycle.vi ‏25 KB

Currently, your VI is a one-shot deal. What you need is a state machine that updates the pct duty cycle array control as a function of the frequency while the current I/O code is idle.
I would use an array of clusters, where each cluster contains e.g. a sequence number, a duty cycle, and a string as element label. Show the scrollbar and set the size whenever the relevant inputs change. Do you want to reset the current setting when the number changes or do you want to retain the current settings as much as possible? You could just use the existing values, reshape to the larger or smaller size, and write it back to the control via a local variable. Set all elements except the percent to disabled so they act as indicators and cannot be changed by the user.
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Some more general comments bout your code:
Why do you use extended precision floating point. All your waits are internally just integers. EXT makes no sense
There is a primitive for 1/x. However, you could just do a 1000/x and eliminate the multiplication afterwards. SInce you are dealing with integers, you can even do the division using quotient&remainder. Depending on the allowed frequency range there are possibly no orange data needed at all.
Make the diagram constant representation match the rest of the code.
The pulses/50ms indicator belongs before the loop. No need to recalculate and refresh it over and over from the same input values.
LabVIEW Champion . Do more with less code and in less time .

Filter an array of arrays based on some criteria

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Say I have the below set of records in an array of arrays. testArr[][]
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How to ask for an array and how to save the values

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I made the changes. Two more questions.
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How can I convert an array off byte into an Object ?

Hi folks...
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How do I convert an array of BYTES (where each BYTE represents a bit) into a single Hex number?

I am reading a signal from a USB-8451. This signal is stored as an array where each element represents a bit in the signal, but is stored in the array as a byte. How do I convert this array into a single Hex number. I attatched what I have so far, there are a few extra things to help me see what ia going on. One code uses Queue and the other uses arrays, let me know if you can help.
Attachments:
845x_EEPROMarrays.vi ‏27 KB
845x_EEPROM.vi ‏26 KB

mkssnwbrd wrote:
... so we can't introduce any other forms of signals or power into the circuit other than what the circuit already has. Trithfully I don't really know how I2C devices work, but my mentor here says that we can't use an I2C method becuase it will introduce voltage into the circuit and may damage out TCON chip.
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Attachments:
Bits to Hex 2.vi ‏17 KB

How do you create an array without using a shell on the FP?

I want to be able to read the status of front panel controls (value, control box selection, etc.) and save it to a file, as a "configuration" file -- then be able to load it and have all the controls set to the same states as were saved in the file. I was thinking an array would be a way to do this, as I have done that in VB. (Saving it as a text file, then reading lines back into the array when the file is read and point the control(s) values/states to the corresponding array element.
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Thanks so much m3nth! This definitely looks like what I was wanting... just not really knowing how to get there.
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Attachments:
Initialize_Settings.vi ‏55 KB
Save_Settings.vi ‏52 KB

How do I assemble an array based on a button cluster?

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