remap numbers(Yes I know there is a GH component;))

Hello,

i want to learn python so i thought begin with remaoing numbers cause when iam using it in gh i need mostly the remap,bounds and create domain so i tought it would be possible doing it in one python component. i found some code and it gets me no error message but neither an solution.

Maybe someone is willed to help me?

the code i put is:

def remap( x, oMin, oMax, nMin, nMax ):

    #range check
    if oMin == oMax:
        print "Warning: Zero input range"
        return None

    if nMin == nMax:
        print "Warning: Zero output range"
        return None

    #check reversed input range
    reverseInput = False
    oldMin = min( oMin, oMax )
    oldMax = max( oMin, oMax )
    if not oldMin == oMin:
        reverseInput = True

    #check reversed output range
    reverseOutput = False
    newMin = min( nMin, nMax )
    newMax = max( nMin, nMax )
    if not newMin == nMin :
        reverseOutput = True

    portion = (x-oldMin)*(newMax-newMin)/(oldMax-oldMin)
    if reverseInput:
        portion = (oldMax-x)*(newMax-newMin)/(oldMax-oldMin)

    result = portion + newMin
    if reverseOutput:
        result = newMax - portion



    return result
    print result

    a = result

thanks in advance!

Attachments:

remap.gh, 7 KB

Replies to This Discussion

Permalink Reply by David Rutten on October 7, 2016 at 9:04am

I think if you return then all statements after that will not be called. Hence, I'm sceptical about this:

return result
print result

a = result

I'd say a = result should be sometime before return result.

Permalink Reply by Daniel González Abalde on October 7, 2016 at 9:04am

I do not know Python but it seems you're not calling the function, only you have defined it.

BTW, the formula can be done in one line:

NewValue = (OldValue-SourceFrom)/(SourceTo-SourceFrom)*(TargetTo-TargetFrom)+TargetFrom

Permalink Reply by Chapulin Colorado on October 7, 2016 at 9:19am

oh thanks daniel, it works now!

and thanks david

Permalink Reply by Chapulin Colorado on October 7, 2016 at 10:31am

i have another question,

if i want to do it like the gh component, to access the min and max values, i input the domain, how can i acces these values? is it like a list?would it be the first and second item? how would be the procedure?

thanks in advance!

Permalink Reply by Daniel González Abalde on October 7, 2016 at 10:39am

T0 and T1 properties of Interval object.

http://4.rhino3d.com/5/rhinocommon/?topic=html/AllMembers_T_Rhino_G...

If "domain" is the input nickname then domain.T0 or domain.T1.

Permalink Reply by Chapulin Colorado on October 7, 2016 at 10:43am

thanks Daniel,

when i put the the domain in it comes in as a data tree, to what have i to change the type hint?

Permalink Reply by Chapulin Colorado on October 7, 2016 at 10:45am

ah have to change to item acces right?

Permalink Reply by Daniel González Abalde on October 7, 2016 at 10:59am

Yes. Note that the types of access are not chosen by the data you will use (except to optimize or other cases), but usually to relate data from different parameters. In this case it should let all access as item type, so that each value is associated with the corresponding source and target domain.

However, this component usually uses a list as input values, what it might be good to put the first input as list access. The difference is that in this way, the component is only executed once (but there will be a loop internally), otherwise the component will be executed once for each item in the list (and internally no loop). I do not know if there is much difference in performance from each other, but I do not think it much.

Permalink Reply by Daniel González Abalde on October 7, 2016 at 11:01am

You have to set the type of object that collects all parameter.

Set Type Hint to Interval.

Permalink Reply by Chapulin Colorado on October 7, 2016 at 11:09am

thanks, Daniel!

Permalink Reply by Anders Holden Deleuran on October 8, 2016 at 10:37am