start at 100 and subtract 10 filling an array in a for loop?

[charliejeynes]

HI i'm having a brain freeze can someone tell me how to fill an array in a for loop so it has 100, 90, 80,         70 etc - this is so simple but i'm having difficulty initialising the array and building it with shift register etc 

[crossrulz]

As you stated, store the current value in a shift register.  Inside the loop subtract 10.  Have the results autoindex out as well to build the array.

[charliejeynes]

could you post an example? as a VI or screen shot? I could do this in an instant in Python or Matlab  - but i have control of variables very easily and I just can't get my head into Labview!!

[crossrulz · Accepted solution]

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@charliejeynes wrote:

could you post an example? as a VI or screen shot?

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How this reads: Do my homework for me!

This is super basic and any example I can come up with will give you the answer.  If you know how to use a shift register and how to autoindex an output array, you can do this.  The wires are the variables, so you have full control over them.

[Ben]

"Ramp Pattern" is a polymorphic VI. Select the "Ramp by Delta" flavor.

Wire "-10" to the delta "100" to the start, "0" to the end you are done.

If you are required to do it the hard way a For loop with a "11" wired to the "n" and then subtract "10" times the iteration terminal from "100" and wire to an output tunnel.

Ben

[alexderjuengere]

you may be interested in

"http://zone.ni.com/reference/de-XX/help/371361J-0113/lvanls/ramp_pattern/"

EDIT: Ups, Ben was quicker than me

[charliejeynes]

it is super easy when you are familiar with all of labviews peculiarities - 

for anyone interested I did this 

[arteitle]

Are you sure you want the For loop to run 100 times?

[altenbach]

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@charliejeynes wrote:

HI i'm having a brain freeze can someone tell me how to fill an array in a for loop so it has 100, 90, 80,         70 etc - this is so simple but i'm having difficulty initialising the array and building it with shift register etc 

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The "etc." poorly defines the problem. Do you want stop at zero? At 60? At -1000000??? What do you want the final array output to be?

And yes, I would do something similar to what Ben suggested.