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Lesson 3

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This tutorial covers some of the GeoTools Block and Conversion tools used for representing Lots, marking there centroid and converting points to blocks  

1. Open the drawing named lesson3.dwg which is located in your GeoTools Tutorials folder. This folder is located in the folder where you have installed GeoTools.

2. You should see a drawing (see Image 3-1) of a small layout of roads and lots under development.

Image 3-1

3.The first thing we will learn here is how to mark Centroid points of lots. 

Marking Centroid point 

1.Click on menu GeoTools => Build => Create centroid marks inside closed polylines or type GT_CreateCentroid at the command prompt.

2. This will pop-up a dialog box as shown below in (Image3-7). Choose the options as shown in Image 3-7 and click on OK button

Image 3-7

3. Now you will be popped up with the standard selection dialog box as shown below in (Image 4-3A)

Image 4-3A

4. Click on Scan selected objects and select all the lots in the drawing and then click on Apply to mark the Centroid points inside the lots as shown below in (Image 3-8)

Image 3-8

Note: In the above example for creating Centroid marks we have used AutoCAD / BricsCAD Point object from the create centroid dialog box shown in Image 3-7 but you can also use the other options like Running number text and Fixed text string for marking the centroid with number or a given string.

 

After learning how to mark centroid points in the lots now we will see how to label the lots with lot names 

Naming the Lots by automatically inserting the block at selected point objects

1. The drawing consists of block by name Block_layout which is assigned with Attribute Lot_Name we will use this for naming the Lots.

2. For naming the Lots automatically click on menu GeoTools => Conversion => Convert Points/Text/Circles to Block/Shape or type GT_P2BlkShp at the command prompt.

3. This will pop-up a dialog box as show below in (Image 3-9) choose the options as shown in Image 3-9   

Image 3-9

4. Click on the button Blocks for selecting the block. This will pop-up the dialog box as shown below in (Image 3-10). 

Image 3-10

5. Select the block by name LOT and click on OK button. This will pop-up the standard selection dialog box as shown below in (image 4-3B)

Image 4-3B


6. Click on the button Scan selected objects and select the point object marked in the lots. Then click on button Apply on the standard selection dialog box.

7. This will pop-up the Output Control dialog box as shown below in (Image 3-11) choose the options as shown in image 3-11 and click on OK button.

Image 3-11


8. This will insert the block BLOCK_LAYOUT along with the attribute ---- in the lots as shown below in (Image 3-12) 

Image 3-12

9. Now we will double click on the attributes ----- for naming the lots. Type the names as shown below in (Image 3-13)

Image 3-13





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