My situation: I have connected lines with a attribute lengh each lines: _length.
I need to get this attribute _length and break in two anothers one: att_begin and att_end for each lines.
For example line 1: has the attribute _length = 39.7. I would like to take this and generate att_begin=0 and att_end = 39.7.
The line 2 has the attribute _length = 84. Is necessary to generate att_begin=39.8 ( in sequence number before ) and att_end=123.8 ( 39.8 + 84 ).
Attached my Source data.
Thanks :)
Best answer by takashi
Hi @danilo_inovacao, if you are looking for a way to sort the line features based on their connecting order, the LineJoiner and PathSplitter might help you.
LineJoiner: Set 'Yes' to the 'Preserve Lines as Path Segments' parameter, and specify a list name to store attributes of the input features.
PathSplitter: Specify the list name to the 'List Attribute' parameter.
The lines will be output from the PathSplitter in their connecting order. I think you can then calculate desired values with the StatisticsCalculator (use Cumulative port) or the AttributeCreator (Enable Adjacent Feature Attributes option).
Hi @danilo_inovacao, if you are looking for a way to sort the line features based on their connecting order, the LineJoiner and PathSplitter might help you.
LineJoiner: Set 'Yes' to the 'Preserve Lines as Path Segments' parameter, and specify a list name to store attributes of the input features.
PathSplitter: Specify the list name to the 'List Attribute' parameter.
The lines will be output from the PathSplitter in their connecting order. I think you can then calculate desired values with the StatisticsCalculator (use Cumulative port) or the AttributeCreator (Enable Adjacent Feature Attributes option).
Hi @danilo_inovacao, if you are looking for a way to sort the line features based on their connecting order, the LineJoiner and PathSplitter might help you.
LineJoiner: Set 'Yes' to the 'Preserve Lines as Path Segments' parameter, and specify a list name to store attributes of the input features.
PathSplitter: Specify the list name to the 'List Attribute' parameter.
The lines will be output from the PathSplitter in their connecting order. I think you can then calculate desired values with the StatisticsCalculator (use Cumulative port) or the AttributeCreator (Enable Adjacent Feature Attributes option).
+1 for the use of the StatisticsCalculator cumulative port. I would never have thought of that!
Hello @takahi and @Mark2AtSafe thanks yours answer.
I did put the these transformers on workspace and in the Transformer StatisticsCalculator the Attribute to Analyse is _length, correct?
Thanks
I think so. Then the _sum value in the features output through the Cumulative port will return the accumulated distance up to that point. That will be the final length and (_sum - length) will be the start point.
ps - hope you're enjoying the Olympics! Pity the soccer semis went the wrong way and the final couldn't be Brazil vs Canada. But I suppose there are plenty of Germans and Swedes here who would disagree!
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