topic Re: Integer Factors in LabVIEW

Integer Factors

fxgbhsfh — Sat, 15 Jun 2013 19:09:45 GMT

Im new to labview and i need help with P6.10

Create a vi that determines all the factors of an integer that is input by the user. The results should be displayed in an array. display only the factors on the front panel (no zeros) .

Re: Integer Factors

RavensFan — Sat, 15 Jun 2013 20:58:06 GMT

What does "P6.1" mean?

The quotient remainder function would be a good function to use to determine if a value is a factor of another number. (hint: remainder = 0).

Re: Integer Factors

apok — Sat, 15 Jun 2013 21:01:32 GMT

@RavensFan wrote:

What does "P6.1" mean?

homework.........

Re: Integer Factors

crossrulz — Sun, 16 Jun 2013 00:39:11 GMT

@apok wrote:

@RavensFan wrote:

What does "P6.1" mean?

homework.........

Yep, this person is just looking for someone to do their homework...

Re: Integer Factors

fxgbhsfh — Sun, 16 Jun 2013 02:22:41 GMT

Im not looking for someone to do my homework. I just would like some help. To give me like a hint or a small push in the right direction. Or even link to sites or video anything will help

Re: Integer Factors

RavensFan — Sun, 16 Jun 2013 03:32:19 GMT

Links

LabVIEW Introduction Course - Three Hours
LabVIEW Introduction Course - Six Hours

Plus the tip about Quotient and Remainder. You should be able to figure out the rest.

Figure out how you would do it without LabVIEW. Then you can figure out how to code it in LabVIEW.

Re: Integer Factors

fxgbhsfh — Mon, 17 Jun 2013 20:37:45 GMT

Ok i got my vi to find the factors of the number i input. But now my question is how can i get the array to show just the factors. Right now it checks all the number up to the number i inputed but if a number isnt a factor then it shows a 0. is there anyway to just show the factor number

Re: Integer Factors

RavensFan — Mon, 17 Jun 2013 20:41:21 GMT

Use Build Array inside the For Loop. If you have a factor build it into the array. If you don't, just pass the array through. Maintain the array from one iteration to the next using a shift register.

Or, if you have LabVIEW 2012, you can use the Conditional Auto-indexing tunnel to determine whether the factor gets indexed in or not.

Re: Integer Factors

RavensFan — Mon, 17 Jun 2013 20:41:22 GMT

Use Build Array inside the For Loop. If you have a factor build it into the array. If you don't, just pass the array through. Maintain the array from one iteration to the next using a shift register.

Or, if you have LabVIEW 2012, you can use the Conditional Auto-indexing tunnel to determine whether the factor gets indexed in or not.

Re: Integer Factors

crossrulz — Mon, 17 Jun 2013 20:57:06 GMT

Since it looks like you are using LabVIEW 2009, you are going to have to use the shift register and build array method.

Re: Integer Factors

JÞB — Mon, 17 Jun 2013 21:01:31 GMT

Of course you should always have one of these on the thumb drive on your keychain.

Re: Integer Factors

altenbach — Mon, 17 Jun 2013 23:24:31 GMT

fxgbhsfh wrote:
Create a vi that determines all the factors of an integer that is input by the user. The results should be displayed in an array. display only the factors on the front panel (no zeros) .

Are you looking for all possible integer factors or for all prime factors (a more typical problem).

Re: Integer Factors

fxgbhsfh — Wed, 19 Jun 2013 17:56:33 GMT

Not sure what this is

Re: Integer Factors

crossrulz — Wed, 19 Jun 2013 18:01:44 GMT

That is an empty array constant. Put an array constant down on your block diagram. Do the same for a numeric constant. Now drag the numeric constant into the array constant. You will need to set the numeric representation to I32 to make all of the data types correct.

Re: Integer Factors

altenbach — Thu, 20 Jun 2013 08:34:06 GMT

@crossrulz wrote:

That is an empty array constant. Put an array constant down on your block diagram. Do the same for a numeric constant. Now drag the numeric constant into the array constant. You will need to set the numeric representation to I32 to make all of the data types correct.

Of you could just wire up everything else first, then right-click the left shift register and select "create constant". One step! 😄

Re: Integer Factors

HylerTeck — Wed, 04 Dec 2013 22:43:05 GMT

What is the 1, for the first case, and the false for the second case.

Re: Integer Factors

Jordan-G — Thu, 05 Dec 2013 22:28:54 GMT

Hi HylerTeck,

Here are the screenshots of the two cases.

The example is a VI Snippet. VI Snippets, as a png file, can be saved to your computer and then dragged to an empty VI. A VI Snippet is a special png file that contains the LabVIEW code.

True Case:

"1" Case

Regards,

Jordan G.

Re: Integer Factors

JÞB — Thu, 05 Dec 2013 22:46:41 GMT

HylerTeck wrote:

What is the 1, for the first case, and the false for the second case.

1, Default So the remainder of Number and "i"+2 is something other than zero. (So multiplying "I+2 by any number will not = number- it is not an integer factor - toss it out!)

2. i+2 = Q we don't need to duplicate the square factor. e.g if Number is 25 and i is 3 Quotient and i+2 are both 5

(Wow that was a long time between bumps)