String.PadLeft node didn’t do its job. Why? [Untitled-1]

@Andrej , what are you trying exactly ? [grafik] KR Andreas

I want to find the best way for sorting lists by element position (Z>X>Y).

@Andrej , you can also use transpose… what is the disered result? KR Andreas

@Draxl_Andreas Take a look a this post: [image] Generating different Identity data for the same family in Revit Revit Hey guys! I just recently started learning about Dynamo and I have a bugging issue in Revit which I continue to do manually but I want to automatize it. I need to name all of these foundation piles in Revit to have a name that starts with “P” and then continuous to numbers from 1 to n, I choose it to be in Identity Data - Comment section (as shown in photo). Can you suggest any shortcut for this via Dynamo? Thanks in advance! [image] I’m using similar approach to set the marks of doors.

You mean you don’t like the idea of List.GroupByKey > List.SortByKey > List.GroupByKey > List.SortByKey > List.GroupByKey > List.SortByKey? I am guessing this is a display bug, and that the strings have had the 0 character added. Try adding a “-“ instead to see if that displays correctly. If so, proceed with the current value into a + node (or two) and you should be all set. :slight_smile:

The quick solution would be to use numbers then and not strings. Strings won’t sort the way you want without all the extra effort that you’re seeing.

[image] Nick_Boyts: The quick solution would be to use numbers then and not strings. So three rounds of group by key sort by key nodes. :stuck_out_tongue:

Well… yeah! :laughing: If I understand the issue, it’s that strings need to be the same length to sort naturally. Which wouldn’t be a problem for numbers. Dealing with 3 sets of values (x, y, z) is still an issue for strings same as it is numbers, they just have different solutions. In my mind, the more “logical” approach is often a better option than the purely “shortest” approach. Even then, the three sets of Group/Sort probably ends up being fewer nodes than dealing with strings at this point.

Yes I agree. Turns out, my dirty solution is the shortest. I tested it, it works as expected :joy: I made a single number out of three numbers (Z,Y,X). a = Z * 100000000 + Y * 10000 + X * 1 and then I just sort by key a. I could have used a = Z * 100 + Y * 10 + X * 1 Hypothetically, there could be a situation where the number doesn’t describe the Z>Y>X priority (1 * 100 + 1 * 10 + 0 * 1 would be the same as 0 * 100 + 10 * 10 + 10 * 1). So the more zeros I put in the formula, the less there is a chance that something like that would happen. Someone should make SortByKey node which allows you to add as many keys as you want…:smiley: I don’t understand GroupByKey>SortByKey>GroupByKey>SortByKey. How is the second step not ignoring the previous one?

String padding

Developers

Andrej December 6, 2023, 2:01pm 5

@Draxl_Andreas

Take a look a this post:

I’m using similar approach to set the marks of doors.

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String padding

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