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The Build tools are a set of tools that help in constructing new objects and building new drawing objects from existing ones.
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Parallel Rechts absetzen
Command
line: GT_ROWMAKER
The GT_ROWMAKER command can be used to
quickly create rights-of-ways by ofsetting a road center line on either
side by a specified distance.
Width of right-of-way: Specify the distance to use as width of
right-of-way. The selected lines will be ofsetted by half of this distance
on either side.
Select R-O-W layer: Select the layer into which the newly offset
lines must be placed.
GT_ROWMAKER Tutorial
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Achslinie aus Parrallellinien
Command
line:
GT_CENTLINE
The GT_CENTLINE command is used to create road center lines from
rights-of-ways. This command adopts a zig-zag method of digitizing to
create road centerlines. The user picks points in a zig-zag fashion across
the right-of-way causing the right-of-way to intersect at two points. The
mid-point of the segment intersected by the right-of-way is taken as the
road center line point and the line joining a series of such centerline
points forms the centerline.
Command: gt_centline
Achslinien von Rändern digitalisieren
Wählen Sie den Startpunkt der Linie:
Erster Zick-Zack-Punkt:
Generate/Jump/Manual/Undo/eXit:<Next zig-zag point>:
....................
....................
....................
Upon starting the GT_CENTLINE command, you are asked
to pick the start point of the road center line. Pick a point as shown in
the illustration above. A sub-menu appears which provides the following
options:
Generate/Jump/Manual/Undo/eXit <Next zig-zag point>:
The default option is to pick the next zig-zag point. In the illustration
above, the zig-zag lines are shown by the red lines. GT_CENTLINE determines
where each zig-zag line exactly intersects the right-of-way and calculates
the mid-point between them as the road center line point.
Generate [G]: The Generate option is used to re-generate the road
centerlines temporary display drawn so far while the command is in
progress. When a pan or zoom command is issued, the temporary display of
the road centerlines is removed. The [G] option is used to visually show
the centerline segments display.
Jump [J]: The Jump option is used to temporarily suspend the
digitization of a zig-zag point. This is a toggle option and using it
again causes the zig-zag point digitization to be enabled again. This
option is typically used when you want to skip certain areas and would
like to move the zig-zag point to another place to continue the
digitizing. This is a toggle option. Use this option again to turn off the
option. Manual [M]: The Manual option
allows the road centerline points to be manually digitized. This option
should be used when it is easier to specify the road center-line point by
a direct pick rather than by the zig-zag method. One example where this is
to be used is when you encounter a road intersection and you want to
digitize the intersection point of two or more roads. This is a toggle
option. Use this option again to turn off the option. Undo
[U]: The Undo option allows the last digitized centerline point to be
undone. Multiple Undo is possible. eXit:
The X option exits the GT_CENTLINE command and creates the road centerline
digitized so far.
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Mehrfaches relatives / absolutes Versetzen
Command
line:
GT_MOFFSET
The GT_MOFFSET command is used to offset the selected object multiple number of times. The multiple offset can be done in either Relative or Absolute mode. In Relative mode, the offset distances are calculated relative to the last object that was offset. In Absolute mode, the OFFSET distances are calculated from the first object that was chosen for offset.
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Versetzen und Original löschen
Command
line:
GT_OFFSET
The GT_OFFSET command is
used to offset an object and delete the original object. This is a quick
way to displace an object sideways. Use this command when you wish to save
yourself the bother of deleting the original object.
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3D-Polylinien versetzen
Command
line: GT_3DOFFSET
The GT_3DOFFSET command is used to offset 3d
polylines in the same manner as 2d polylines. 3D polyline can be offset both
horizontally and vertically. This can be a very useful in several civil
engineering design situations that require the offsetted polyline to be elevated
or lowered by a fixed amount relative to the source polyline.
GT_3DOFFSET Tutorial
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Zentroidpunkte/ Beschriftung für Polylinien
erzeugen
Command
line: GT_CREATECENTROID
The GT_CREATECENTROID
command is used to create centroidal marks inside closed polylines.
Layer to create in:
Source: Creates the centroidal marks in the source layer( i.e the
layer in which the closed polylines reside).
Current: Create all the centroidal marks in the current layer
Specify: Choosing this option allows specifying the layer in which
the centroidal marks will be created.
Select: Clicking on Select button pops up the Select Layer
dialog box.
Object to create: Specifies the type of object to create.
ACAD Point: An AutoCAD point object is created at the centroidal
location of each closed polyline.
Running Text Number: A Text string is created which is incremented
by 1 each time for the next polygon being annotated with centroidal marks.
Fixed Text string: A fixed text string value is used for the
annotation of the centroidal mark. The value of this text string is
specified in the edit box provided for it.
Start Number: Specify the start number to be used for the
annotation, if the Running Number Text option was chosen.
Format Width: Specify the required format width. This will prefix Zero
before the running number text such that the string length is atleast
equal to the format width specified.
Fixed Text string value: Specify the value of the fixed text string
to use for annotations.
Text Height: Enter the height for marking the Text string or
Running number text.
Ensure that the centroidal point always falls physically inside
polygon: If this option is checked and if the centroidal falls outside
the polygon, it will be moved to a location physically inside the polygon.
The GT_CREATECENTROID command has an option to run without the dialog box
selector.
GT_CREATECENTROID Tutorial
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Messen mit Mehrfach-Variablen
Command
line:
GT_MVMEASURE
The GT_MVMEASURE command allows multiple and variable distances to be
measured along lines, polylines.
Specify segment length
Cumulative - From beginning of line: Checking this option allows
specifying each marked distance from the beginning of the polyline.
Each segment: Checking this option allows specifying each marked
distance segment-wise, ie. each distance relative to and following the
previous segment.
Place blocks at measured points: Checking this option allows you to
select a block from the current drawing which can then be placed on the
marked positions.
Break at measured points: Checking this option allows the polyline
to be broken at each of the marked positions of the points.
Align block with object: Check this option to align the block with
the object slope at each point (similar to the Measure command Align
option)
Place at first and last point also: Checking this option
automatically places a block or point at the first and last point of the
curve. The normal Measure command does not have this possibility too.
GT_MVMEASURE Tutorial
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Measure multiple objects
Command
line:
GT_MEASUREMANY
The GT_MEASUREMANY command applies the MEASURE command
on a multiple selection of objects. You will be prompted for all inputs as
required by the MEASURE command. In addition, GT_MEASUREMANY command also
provides the option to place points/blocks at the start and end of the
curve.
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Polylinienabschnitte mehrfach variabel
versetzen
Command
line:
GT_MVOFFSET
The GT_MVOFFSET command allows individual polyline segments to be offsetted
by different user-specified distances. One of the places where this
command can be useful is in designing lots where each side needs to be
offset by differing amounts to satisfy the frontage, clearance and other
requirements.
In the example above, the polyline segments
(shown with vertex numbering) are offsetted by amounts of 10.0, 25.0,
30.0, 30.0 amd 25.0 respectively. The command sequence is shown below.
The Side to Offset is to be specified relative to the first segment of the
polyline.
Command: gt_mvoffset
Wählen Sie eine Polylinie:
Bestimmen Sie Seite um zu versetzen:
Versetze Abstand: <2.0000>: 1
Vesetztes Segment [Next/Previous/eXit]:
Vesetztes Segment [Next/Previous/eXit]:n
Versetze Abstand: <2.0000>:
Vesetztes Segment [Next/Previous/eXit]:n
Versetze Abstand: <2.0000>: 4
Vesetztes Segment [Next/Previous/eXit]:
Vesetztes Segment [Next/Previous/eXit]:n
Versetze Abstand: <2.0000>: 6
Vesetztes Segment [Next/Previous/eXit]:
Vesetztes Segment [Next/Previous/eXit]:x
GT_MVOFFSET
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Einzelnes Segment einer Polylinie versetzen
Command line:
GT_SEGOFFSET
The GT_SEGOFFSET command is useful to offset a single segment from a polyline. You will be asked to pick the segment and it will be offset using the standard AutoCAD OFFSET command.
Note: If you pick a segment which contains arc segments, the offsetting segment will be the straight line joining the two points and not the arc. Fitted and Splined polylines cannot be used by this command.
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Einfache Körperextrusion
Command line:
GT_EXTRUDER
The GT_EXTRUDER command is useful to create extruded 3d solids in an easy
and intuitive manner. This command internally uses the AutoCAD EXTRUDE
command but provides a better and easy interface to setup the command.
Cross Section pattern: Use this section to specify
which type of pattern to use as a cross section profile for the extrusion.
Pre-defined sections like Rectangle, Circle and an n-sided Polygon can be
specifed by their parameters. If Custom option is chosen, the user is
prompted to select a closed 2d object which will be used as the cross
section profile and extruded through the path curve.
Width of rectangle: Specify the width of the rectangle to be used
in the pre-defined rectangle pattern.
Height of rectangle: Specify the height of the rectangle to be
used in the pre-defined rectangle pattern.
Radius of circle: Specify the radius of the circle to be used in
the pre-defined circular pattern.
Length of polygon side: Specify the length of each side of the
polygon used as cross-section profile.
Number of polygon sides: Specify the number of sides of the cross
section polygon pattern.
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Linien und Polylinien an nächste Endpunkten
verbinden
Command
line: GT_JNE
The
GT_JNE command is used to join the nearest ends of two selected lines and/or
polylines with a connecting line and optionally join all the three into one
single polyline. Command:
Select first object: (do so)
Select second object: (do so)
Join all segments together? [ Yes/No ] <Yes>:
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Gemeinsame Ränder die geschlosssenen nahestehenden Polygonen entlang bilden
Command
line:
GT_EDGEBUILDER
The GT_EDGEBUILDER command is a tool useful for building edges along adjacent, closed
polylines. A typical
scenario in GIS data preparation or modeling involves being able to create intersection-to-intersection
edges from a network of closed polygons lying adjacent to each other. While many GIS applications create
a network of closed polygons, very few easy and direct tools or procedures are available to create the
common edges between polygons as unique, open polylines. The GT_EDGEBUILDER command was born in an attempt
to fulfil this need in an easy way.
The program works on a selection of polygon boundaries and builds the unique edges
between them. Like in every GeoTools command, it is best to start with as clean and accurate data as possible. BEFORE you start
this command, it is essential that all duplicate segments from the selection are removed and cleaned using
the GT_DISTANGWEED command.
Search Window Size around
each vertex: Specify the value for
search window around each vertex.
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Interpolieren Punkt-Elevation von nahestehenden Polylinien-manuel
Command
line: GT_PTINTERMANUAL
The
GT_PTINTERMANUAL command is useful to assign point elevations by
interpolating the elevations of neighboring polylines.
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Interpolieren Punkt-Elevation von nahestehenden Polylinien-automatisch
Command
line: GT_PTINTERAUTOMATIC
The
GT_PTINTERAUTOMATIC command is useful to assign point elevations by
interpolating the elevations of neighboring polylines automatically by
scanning specified layers.
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Kopieren und drehen
Command
line:
GT_CPROT
The CPRT command is used to combine both Copy and Rotate
operations in one command. The standard selection dialog is first
displayed and a selection of objects is then allowed to be copied and
rotated using standard command options.
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Schieben und drehen
Command
line:
GT_MVRT
The MVRT command is used to combine both Move and Rotate
operations in one command. The standard selection dialog is first
displayed and a selection of objects is then allowed to be moved and
rotated using standard command options.
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Regionen aus Polyliniennetz bilden
Command
line: GT_CCPOLY
The
GT_CCPOLY command is used to create closed polylines from a mass of
inter-networked polylines, lines, arcs and circles. It is nothing but an
automated version of the BPOLY command and it applies BPOLY at regular
intervals in X and Y directions along a rectangular grid and creates
closed polylines (resulting from BPOLY) from the adjoining boundary set.
The program uses a parameter called 'Scan Window Size' to determine the
BPOLY sampling interval. Needless to say, the GT_CCPOLY can be quite slow
in its operation because it has no intelligent way to know how many unique
closed polylines would be created. Since the BPOLY sampling is done at
each regular interval, the program takes more time if the sampling
interval is smaller and vice versa. Nevertheless, the program can be
useful in many cases. Use it appropriately by specifying a scan window
size that works with optimum speed and accuracy.
Scan method:
Automatic:
At selected points:
Scan Window Size: Enter the amount of search (scan) size
Zoom Window size: Enter the amount of zoom size.
Select Layer for closed polylines : Clicking on this button pops
up the dialog box for selecting the layers of closed polylines
Select Layer for
polygon edges : Clicking
on this button pops up the dialog box for selecting the
layers of polygon edges.
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Mathematische Zwischenlinie zwischen zwei Isolinien
erzeugen
Command
line:
GT_CONTOUROFFSET
The
GT_CONTOUROFFSET command can be used to create an offset polyline in
between two given contour polylines.
This command will ask the user for two polylines representing two contours
and will create an intermediate "offset" polyline at the correct
interpolated elevation between the two polylines.
The location of vertices for the offset polyline will be determined on the
basis of configurable parameters like 'Offset Percent' (percentage
distance between the two polylines) or an absolute distance from a point
on the first polyline and measured towards a similar point on the second
polyline.
The algorithm used to determine the offset polyline positions is not yet
perfect to handle polylines of all geometric shapes. Often, the command
may create offset polylines which are completely unacceptable as an
interpolated offset. We would like you to be aware of these limitations.
To overcome some of these bugs, you may run the command again reversing
the order of pick for the first and second polylines. This may sometimes
produce better results.
Alternatively, you can also try to apply either of the two algorithms that
the program uses. If one algorithm does not work for one set of polylines,
the other might work or produce better results.
To determine a match point on the second polyline, the program uses a
technique which is based on proportionally equivalent distance matching
between and along the two polylines.
Algorithm to use:
Method 1: Select this option to use the primary algorithm
Method 2: Select this option to use the alternative algorithm, if
the primary algorithm does not work.
Offset Method:
Percentage: If you select this option, the offset polyline will be
created at the specified percentage distance between the first polyline
and second polyline.
Distance: If you select this option, the offset polyline will be
created at the specified distance from the first polyline towards the
second polyline.
Sampling Method:
At Each vertex: The offset polyline created will have only as many
vertices as the first source polyline.
At sampling interval: If you select this option, the first polyline
will be sampled according to this interval and for each of these sampled
points, the corresponding offset polyline points will be generated.
Sampling interval: Enter the distance along the first source
polyline to create sampling points, which will then be used to create
offset polyline points.
Percentage distance from first polyline: Enter the percentage
distance from first polyline at which to create the offset polyline
points.
Actual distance from first polyline: Enter the actual distance from
first polyline at which to create the offset polyline points.
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Eine 3D Polylinie über schneidende lineare Objekte
zeichnen
Command
line: GT_NETNODES
The GT_NETNODES command is used to place nodes
(points) along a linear network of connected lines and/or polylines. This
command performs a simple trace through the entire network and places
points in such a way that that no two points are closer to each other than
the specified distance which is measure along the network (and is NOT the
straight line distance) between the two points. Please be aware that the
command expects that the network is topologically correct, cleaned and
that the end points of the lines are EXACTLY touching each other.
Distance interval for placing nodes :
Specify the distance at which the nodes (points) have to marked.
Search window size : Specify the size for the search window
as per the drawing unit.
Select layer to place nodes : Clicking
on this button will pop-up the select layer dialog box for placing the
nodes (points) in required layer.
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Eine 3D Polylinie über schneidende lineare Objekte
zeichnen
Command
line: GT_DRAPEPOLY
The GT_DRAPEPOLY command can be used to drape a set
of 3d Polylinies (source objects) over a set of intersecting linear objects
(target objects). Upon draping, this command creates vertices all along the
source objects (3d Polylinies) where
they intersect the target linear objects.
Select source objects:
(do so) - allows a
filtered selection of 3d Polylinies only
Select target objects:
(do so) - allows a
filtered selection of linear objects like lines, Polylinies (both 2d and 3d),
arcs and splines.
After GT_DRAPEPOLY runs, there will be new vertices
created on the source Polylinies at every point where they intersect the target
objects. If the intersecting objects are 3d, their 3d intersection value will be
computed and used.
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