How to delete a single dimension from a multi segment dimension?

Revit
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1

Hi Everyone!

I have started practicing dynamo recently… I managed to write a script for deleting dimensions less than a certain length.

The problem is I do not know how to remove parts from a multi segment dimension, as I can not figure out the way to breakdown the multi segment dimension and select parts I want to remove.

As shown in the printscreens I do not know what to do with getting dimension segments.

Please give me your thought.

Thanks

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Untitled1920×1080 271 KB

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2

This is the full dynamo script I wrote

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Untitled21920×1080 274 KB

3

Hi @hosamelshazly92 and welcome!

A dimension contains an array of dimensionsegments.

But you can retrieve the values by Dimension.Value, like this:

image
image1326×594 211 KB

Forgot to ask what you need to know before you can delete a segment. I just assumed that it was based on curtain value, lol.

4

Hi @CVestesen my warm greetings to you.

I am using Element.GetParameterValueByName node to filter dimensions and delete small ones.

In case of multi segment dimensions I get empty list for their parameters value, so I am looking for a way to pick specific segements as elements to delete them.

One more Thing, I think there is a differefence between getting parameter value for a dimension and getting value for it, it shows different numbers.

Thank you

5

Since your project is in metric, you need to convert from internal units (feet) to your display units (millimeters):

image
image1583×667 78 KB 

dims = UnwrapElement(IN[0])
segments = []
for dim in dims:
	seg_temp = dim.Segments
	segments.append(seg_temp)

OUT = segments

import clr
clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import UnitUtils, DisplayUnitType

seg_lists = IN[0]
seg_values = []
dut_mm = DisplayUnitType.DUT_MILLIMETERS
for seg_list in seg_lists:
	value_temp = []
	if len(seg_list) > 0:
		for seg in seg_list:
			value = seg.Value
			value_converted = UnitUtils.ConvertFromInternalUnits(value, dut_mm)
			value_temp.append(value_converted)
	seg_values.append(value_temp)
	
OUT = seg_values

However, I don’t think you will be able to delete a single dimension from a multi-segment dimension as you are describing. While the DimensionSegment’s parent Dimension can be deleted (as a Dimension is an Element), the Revit API does not provide the ability to delete a particular segment. This is explained more in-depth by Jim Jia from Autodesk here.

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6

Hi Hosam,

This is possible with the Genius Loci package which have a bunch of nodes for dimensioning.
You must indicate in the conditional statement the length to delete.
In the example below 1 meter :

x<1?
false:
true;

Delete dimensions less than a certain length
Delete dimensions less than a certain length2960×712 166 KB

Delete dimensions less than a certain length.dyn (24.7 KB)

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7

Hi… This is exactly what I was aking about.

Thank you

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