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Highway help!

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#16
frax

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I would also peek at the attributes of the original data that you have - maybe you can query and eliminate things that way too.
Hugo Ahlenius
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#17
nonie3234

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Well, there's not much to the attributes...but yes, that would be a great idea!
My coworker was saying that if we could get data that had a directional attribute - we could delete the "extra" direction.



I would also peek at the attributes of the original data that you have - maybe you can query and eliminate things that way too.

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#18
frax

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What happens if you dissolve over the name attribute?
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#19
nonie3234

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Aw, man - you know what? [forehead smack]
I never THOUGHT of that! Let me give that a try...

What happens if you dissolve over the name attribute?



#20
nonie3234

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***sigh***
Sadly, no.



Aw, man - you know what? [forehead smack]
I never THOUGHT of that! Let me give that a try...

What happens if you dissolve over the name attribute?

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#21
Hans van der Maarel

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*lightbulb moment*

Maybe FME can come to the rescue... Snapping and then dissolving the lines into a single one. I'll give that a try tomorrow.
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#22
nonie3234

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FME? I'm not familiar with that, but I am intrigued...

*lightbulb moment*

Maybe FME can come to the rescue... Snapping and then dissolving the lines into a single one. I'll give that a try tomorrow.



#23
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Dissolve would be the first step - merging all the continous sections to one feature. Where there are two, you should then be able to see that there are two of each of the lines (in the attributes), and then be able to just turn one off.
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#24
James Hines

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If the roads are the only features showing double & triple lines & if Illustrator is your final package simply don't worry about the line work & digitize new lines over them using the roads as a bitmap. On the other hand you could always release the raw data to other cartographers with no fee attached so others could simply solve the problem for you. BTW how about the rest of your data specifically line work appear?

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#25
Wes Peck

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What lime symbol are you using for your highways in ArcGIS?

#26
erik

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Have you tried doing a blend between the adjacent lines in Illustrator? Use a step value of one to get a single line that is hopefully halfway between them (you can edit blend parameters after making a blend by accessing the Object-->Path-->Blend options submenu). You can then expand the blend and remove the original double lines by a subtle method that involves saving the original two lines as a named selection before doing the blend, then afterwards loading the named selection and deleting it, leaving the one new line.

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#27
nonie3234

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Oh, sorry - I actually took two days off! :blink: Christmas shopping. Bleh.
Anyway...

Frax:

Dissolve would be the first step - merging all the continous sections to one feature. Where there are two, you should then be able to see that there are two of each of the lines (in the attributes), and then be able to just turn one off.


The attributes only show one...

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#28
nonie3234

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When you say "digitize over them" do you mean using some tool in Illustrator? Or do you mean tracing over them with the pen tool by hand? To answer your question, yes - Ilustrator IS my final package.

I can't release the raw data. I work for a huge corporation, and there are miles of red tape around that. I wonder, too, if there is not some sort of agreement we signed with the data provider that would prohibit that. Good idea, though - that would be an excellent trade...

The only line data I have are the roads and highways - they ALL have the same problem. The polygon boundaries are a little bizarre, they come over with a zillion points. I just "simplify path" at about 90% until I like how it looks. (Not too smooth, not too many points.)

If the roads are the only features showing double & triple lines & if Illustrator is your final package simply don't worry about the line work & digitize new lines over them using the roads as a bitmap. On the other hand you could always release the raw data to other cartographers with no fee attached so others could simply solve the problem for you. BTW how about the rest of your data specifically line work appear?



#29
nonie3234

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It's a simple line symbol for all of them.

What lime symbol are you using for your highways in ArcGIS?

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#30
nonie3234

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I just tried that - I must be doing it wrong? I got a completely different result:

Have you tried doing a blend between the adjacent lines in Illustrator? Use a step value of one to get a single line that is hopefully halfway between them (you can edit blend parameters after making a blend by accessing the Object-->Path-->Blend options submenu). You can then expand the blend and remove the original double lines by a subtle method that involves saving the original two lines as a named selection before doing the blend, then afterwards loading the named selection and deleting it, leaving the one new line.

erik

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