For loop, sum up to the current loop?

MichaelPascoe

Is there a way to sum up to the current loop? The loop calculates an angle, I need the n'th loop to add up all of the previous loops angles.

for (var i = 1; i < nSegments; i += 1)
        {
            var = sumOfPreviousSegmentAngles = 
            var segmentAngle = atan(d / sqrt(i))/degree;
        }

konstantin_shiriazdanov

Yes, you just need to decleare sum variable outside of the loop.

var sumOfPreviousSegmentAngles = 0*degree; 
for (var i = 1; i < nSegments; i += 1)
        {
            var segmentAngle = atan(d / sqrt(i))/degree;
            sumOfPreviousSegmentAngles+=segmentAngle;
        }

konstantin_shiriazdanov

Yes, you just need to decleare sum variable outside of the loop.

var sumOfPreviousSegmentAngles = 0*degree; 
for (var i = 1; i < nSegments; i += 1)
        {
            var segmentAngle = atan(d / sqrt(i))/degree;
            sumOfPreviousSegmentAngles+=segmentAngle;
        }

MichaelPascoe

Thank you, I will try this.

konstantin_shiriazdanov

And didn't noticed it from the beginig, but since you dividing the result of arctan by degree you don't need degree units for sumOfPrevousSegmentAngles, so just

var sumOfPrevousSegmentAngles = 0;

Jake_Rosenfeld

^ Also though it is usually better to keep the units attached to unit-ed values.  This ensures proper use of those values down the line and helps prevent mistakes.