| Q:
How to get the numbers of street intersections?
Q: I am trying to create a point
at each intersection in New York City from the street polyline file.
Does anyone know how to do this?
Q: What we need is a point layer that we can use to generate a
street intersection list report. Any ideas?
Q: I need to take a street
centerline shape file, and create an intersection table from it. The
resulting table should contain the names of the streets, and the
coordinates of each intersection.
A: Use the Export
Nodes function of ET GeoWizards with the "Regular"
option. This will produce a point dataset where only 3 or more street
segments meat. The number of points in the output dataset will
represent the number of intersections in the output dataset.
- If you consider a
street intersection the location where is a change of street name,
you can include the "Pseudo" nodes together with the
"Regular" nodes.
- If you need the
names of the streets at each intersection, specify the street name
field in the input.
- If you want to
get the coordinates of each intersection you can use the Point
Coordinates tool of ET GeoWizards .
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Q: I have fantastic elevation data, much better than any DEM I can order from the USGS site, and ideally I would like to convert this data to a TIN. There's one problem, however; the data is in the form of a (CAD) topo map. The topo map consists of contour lines, and elevation values overlaying those contours (there is a break in the contour line where a value exists).
Q: I have an imported file of AutoCAD generated attributed contour lines that I'm trying to clean. There are breaks in the polylines where annotation originally was to be placed. Of course, these breaks need to be removed and the polylines with similar attributes joined.
A:
The Clean
Contour Gaps function of ET GeoWizards should solve this.
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Q: I have a shapefile with about 150 lines. I need to create a series of lines that are perpendicular to these lines, every 1000m. Does anyone know a quick way to do this?
Q: I want to draw polylines perpendicular to (and on both sides of) a baseline (it's a river centerline, so it is not straight) at a specified interval. I have seen a lot of discussion about this that involves coding, however I unfortunately don't know anything about coding but would like to figure out a way to do this because I have a couple hundred of them. Does anyone know a way - or could point me to a technical paper or something so that I could figure it out?
A:
The Create
Station Lines function of ET GeoWizards allows you to draw
perpendicular lines to the input polyline dataset at user specified
distance. The user can select the side of the perpendiculars (Left,
Right or Both) and the length of the perpendiculars. If the source has
Z or M values the length of the perpendiculars can be taken from the
Z(M) value of the source polyline at the current station.
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Q: I'm trying to split a polygon into smaller polygons (parcels) of a known area (2 acre parcels). Is their any way I can do this or, as I'm cutting the polygon, to get a reading of the area of the new polygon before I finish cutting it? I'm basically subdividing a large lot into 2 acre lots and I'd rather not do it by eye or constantly readjust the size of each one.
Q: What I am looking for is some code or a method for splitting a parcel in two, based on an area. The method needs to take into account that a parcel may be of any shape, orientation or size so a basic split is not what I am looking for.
A:
While there
are indefinite number of solution for the problem, the Split
Polygon By Area tool of ET GeoTools offers a simplified solution
by splitting the polygons with horizontal or vertical line based on
user specified target area (or percentage of the total area of the
original polygon) and a side (East, West, South or North) to get the
sub-polygon.
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Q:
I am trying to figure out how to display pseudo and dangling nodes
from a street coverage in ArcMap.
I can't seem to find a function in ArcGIS that lets you display them
like in ArcInfo
A: Use the
Export
Nodes function
of ET GeoWizards or Draw
Nodes tool of ET GeoTools
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Q: I have a coverage of storm water assets that we are
migrating to Geodatabase, but I am having problems with finding a
solution for one part of this conversion. In the original data there
was a from and to node field but the layer will continue to have
updates with new developments or road widening. So how would I get the
from and to node ids in a shapefile or feature class so we can join
tables and copy over our unique structure IDs to the attached pipe?
A: Use the Renode
function of ET GeoWizards
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Q: How do I join
two separate polylines? Something like MERGE would work, except I only
want it to join the two polylines if their endpoints are
"snapped" together.
Q: Is a way to merge a group of polylines into one line. What i
have is a hydro streams layer for a county where a polyline breaks at
every intersection. and the streams are broken into categories of
primary, secondary, and tertiary. I need to remove the tertiary
streams but that leaves me with breaks in the stream segments where
the tertiary streams would intersect. so does anyone know if there is
a way to automatically merge all the segments that should no longer be
broken. almost like a reverse planarize of lines command.
Q: I want to edit arcs in a street coverage, shapefile,
and/or database feature. I don't know how to unsplit two arcs. I want
to remove a pseudo-node that is no longer necessary. Right now I'm
converting my database features to a coverage and going in with
Workstation ArcEdit to perform unsplit.
A: Use the Clean
Pseudo Nodes function of ET GeoWizards or the Clean
Pseudo Nodes tool of ET GeoTools
|
Q: Does anybody
know how to detect small gaps between polygons and holes in polygons
in a feature class and store them in another feature class?
Q: I have a large shapefile that has multiple polygons (each
has a different value) and I need to close the gaps between the
polygons.
A: Use the Clean
Gaps function of ET GeoWizards, Draw
Gaps or Fill
Gaps tools of ET GeoTools
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| Q: Can you create
polygons from lines in ArcView using the topology tools?
A: No, but you can with the Build
Polygons function of ET GeoWizards.
|
| Q: I have created a
water service points.shp (with a triangle for the symbol). I am trying
to rotate these points based on there service access street, rather
then manually rotating each one. Is there some way to rotate the apex
of the triangle to point to the access street based on a joined
database.
A:
Use the Point
Angle and Position function of ET GeoWizards. It will assign to
each point the angle of the closest polyline segment. Then you can use
this angle to rotate the point symbol.
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| Q: Is there a process
where I can consolidate my data points to reduce the amount of points
on ArcMap?
Q: Does anyone have a method of snapping points within a
certain distance of each other to a single location?
A: Check the Thin/Generalize
Points function of ET GeoWizards.
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| Q: I need to create a
centerline from a river polyline coverage. I discovered that the
"collapse dual lines to centerline" tool only works on
uniform casings, like roads. Is there a similar tool or method to
generate centerlines for rivers/ hydro features?
A: Check the Create
Centerlines function of ET GeoWizards
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| Q: I am trying to calculate
the length of sides of the polygons in the layer that are along the
roadway (centerlines). I do not need the perimeter of each polygon,
just the length of the sides of polygons that are along roads.
A: See this
article
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