Fusionar segmentos de línea para formar una sola línea y dividirla en partes de igual longitud.

Question

<\/HEAD>Tengo un shapefile de polilínea de una red vial masiva. Los segmentos de carretera están severamente fragmentados. Quiero fusionar estos varios miles de fragmentos en una sola línea larga y luego dividir la línea resultante en segmentos de longitud uniforme, digamos, una milla.<\/P> <\/P> Abordé este problema primero usando la herramienta merge en la barra de herramientas del editor. Me pide "choose the feature with which other features will be merged". Parece que no tengo control sobre la lista de features de la cual debo elegir. Sin embargo, selecciono un feature y realizo la fusión. Luego se crea una sola línea. El verdadero problema comienza al intentar dividir esta línea recién creada. Uso la herramienta split en la barra de herramientas del editor. Especifico la longitud del split y solo divide el feature que seleccioné anteriormente durante la fusión.<\/P> <\/P> ¿Alguien puede sugerir un método para resolver mi problema? <\/P><\/BODY><\/HTML>

DanPatterson_Retired · Answer

I suspect it is behaving as designed since a gap represents the physical divide between two or more segments.  Does converting multipart to singlepart tool work?

RaghunandanBaireddy1 · Answer

Hello,

Thanks for the response. The dissolve part works fine.

However, while splitting the dissolved line, it seems as if the splitting operation is being terminated when it comes across a break in the line. (My network has gaps/break in between.) The output, instead of containing several parts of specified length, contains only of two parts. The first part has one short segment that begins at the beginning of the dissolved line and breaks at the first gap after the beginning. The second part is the remaining big chunk of the dissolved line.

MicahBabinski · Answer

Hello!

If you want to merge all of your road segments into a single feature, then the Dissolve tool is right for you. Just leave the 'dissolve field' parameter blank and you'll wind up with a single feature. Unfortunately you'll lose the unique attributes of the segments. There is a 'Statistics Fields' parameter that will allow you to retain attributes and choose how their values are populated in your resulting single feature.

As for splitting them at equal lengths, here is what I recommend: Once you have your single line feature, add it to ArcMap, start an edit session, and select the feature. Then, on the Editor Toolbar, choose the 'Split' command in the Editor menu. This will give you a dialog like this that will allow you to split the line at a distance of your choosing:

Hope this helps!

Micah