Rounding in STR{2}

[Alex C]

Hi, I've been trying to write some GDL to display an X and Y value as decimal feet, rounded to .5' So for example it would read as "20'x15.5'"

The closest I have been able to get is using the below

dimxy = STR{2}("%~.1df", A)+"x"+STR{2}("%~.1df", B)

This hides the zero for me but I can't for the life of me get it to also round to the nearest .5. I see there is a rounding function in the reference guide but it says that it is for area calculations, these are length. Is this possible or should I be going about this another way?

[Jochen Suehlo · Accepted solution]

I am not at home in feet and inch, but you could try to round the meter-Values after convert into feet.

A_final = INT(A / 0.3048 * 2 + 0.5) / 2 * 0.3048

B_final = INT(B / 0.3048 * 2 + 0.5) / 2 * 0.3048

dimxy = STR{2}("%~.1df", A_final) + "x" + STR{2}("%~.1df", B_final)

[BerndSchwarzenbacher · Accepted solution]

Hi Alex,

Yeah that rounding to .5 doesn't seem to work for decimal feet.

I had a similar idea like Jochen, but different approach:

1. calculate the value of A & B in feet

2. now use the rounding to .5 as if was meters

f2m = 0.3048

fA = A / f2m

fB = B / f2m

dimxy = STR{2}("%*5~.1m", fA)+"x"+STR{2}("%*5~.1m", fB)

text2 0, 0, dimxy

[Alex C]

Thanks guys, both methods work great.

I don't totally understand the math for you method Jochen, It seems more like the meter values are being rounded before being converted to feet? For the other method I did have to add the foot tick mark into the string since it won't display for the meter conversion value.