Converting decimal feet to fractional feet and inches

Revit
1

Hello all,

new user here and I was wondering if I could get some help on a particular issue.

I am trying to have dynamo convert a decimal feet number to fraction feet and inches. the converted dimension should be formatted like xx’-yy". the idea is to then push this “converted” dimension back into Revit. also i need to have the precision of the “converted” dimension set at the nearest 1/2".

for example, I need to go from
4.56’ to 4’-6 3/4" (need to keep the “dash” as part of the dimension)

I did a search but have had no luck and unfortunately my programming skills are severely lacking.

any help would be appreciated.

2

You can try spring nodes’ Feet2Fraction node but you’ll need to tweak the fraction presentation a bit. Double click the custom node and change this line:

ft1s = __Apply(f1,ft1) + “'”;

to

ft1s = __Apply(f1,ft1) + “'-”;

basically just adding the extra dash that you need. Then change the content of

List.Cycle(2,7);

to

List.Cycle(2,2);

that way the node will round to the nearest 1/4th instead of the default nearest 1/128th.

2 Likes
3

Thank you Dimitar. I will give this a go once I get back in the office. I do have a question though. How does list.cycle(2,2) set a 1/4" precision?

4

It provides a list of the number 2 raised to the power of the desired input. Basically the same thing as using the Math.Pow node:

For some reason I felt like using List.Scan at the time when I originally made the node. the function later on determines which is the nearest fraction and uses that.

5

I See. Thank you for he clarification. The node now works as I want it to.

Thanks.

6

@Dimitar_Venkov
Hello
I have used the same node as I wanted to convert to feet and fractional inches, I am facing a problem that I hope you can help me solving, when the value is 1’ 3" the node shows the value as 1’ 2 2/2". , if the value is 1’ 1" it is displayed as 1’ 2/2", if the value is 3’ it is displayed as 2’ 11 2/2"
how can this be fixed
Thanks in advance

7

@Dalia

?

Pasted image1549×419 27.7 KB

8

@kulkul
yes that what happens when I use it
the 1’ 2/2" is supposed to be 1’ 1", right?

9

Can we solve this please?

It would be nice if it can;

Take the number (x) and round down the number (y) then y gets to be feet value.
Then inches-wise, x-y*12. Then round up the value to be the inches.

Then it would be a home run for us.

I wish I knew c# to do this… =(

10

So, this is how far I got.

Now I need to figure out how to combine the two feet and inches together.
I did not bother providing fractions because building precision is typically 1".
Well, the next step can be getting the fractions out of the way but I would like to get the rounded versions to work properly first on our end.

  1. I need to get the 6 decimal digits out of the way first.
  2. Then, I need to combine feet and inches. (The calculation is complete as shown below.)

Please help.

Capture.JPG1822×872 130 KB

11

Here is my attempt at converting… this will possibly give some insight to new users. It also formats the feet & inches as X’-X-X/X". It has some rounding and you can limit the fractional values. The feet2fraction node will definitely accomplish this much more gracefully. Enjoy!

DYN - General - Convert from Decimal FT to FT IN - Formatted.dyn (38.1 KB)