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Array

From: AutoCAD 2008 Essential Training

Video: Array

Sometimes making manual copies of our entities can be tedious especially if our copies have to fall into a rectangular or rotational pattern. The Array command was created to quickly make patterned copies of our selected objects. Let's take a look at the Array command. I'm going to come up and click my Open icon. We are going to open a drawing. Let's look inside the Chapter 9 folder within the Exercise Files directory. And I'm going to come down to the number 4 drawing ,which is our Array Demo. I will highlight this guy and click Open. Now what we see on our screen is a typical high school classroom.

Array

Sometimes making manual copies of our entities can be tedious especially if our copies have to fall into a rectangular or rotational pattern. The Array command was created to quickly make patterned copies of our selected objects. Let's take a look at the Array command. I'm going to come up and click my Open icon. We are going to open a drawing. Let's look inside the Chapter 9 folder within the Exercise Files directory. And I'm going to come down to the number 4 drawing ,which is our Array Demo. I will highlight this guy and click Open. Now what we see on our screen is a typical high school classroom.

It's not completely typical because it doesn't have any desks in it yet. Well, it does have one desk. When I zoom in down here we do have one standard high school desk. Let me backup a little bit. Now my goal is to fill this room with desks and if I was to use the traditional Copy command it would be extremely tedious because I would have to select my desk and then I would have to know each subsequent location where I needed to place a copy. Instead since I know my copies need to fall into a rectangular pattern of rows and columns I'm going to use the Array command.

To create an array I'm going to come over to my Modify toolbar and select the Array icon. This will bring up my Array dialog. From here I can select my type of array. There are actually two types. We are going to look at rectangular first. So that guy is selected that's good. Let's come over and click our Select objects button. This is where we identify what we would like to array. Let me click. AutoCAD is asking me to select objects I will select my desk and then I will right-click to finish the selection. Now that I have identified my objects I can now select the number of rows and columns I would like to create.

I'm going to speculate. I'm going to try 5 rows and I'm going to click in my Columns field to set that when I do watch my little preview area. When I click in the Columns field, notice my preview is dynamic. It's a little pseudo preview to give me an idea of what my array is going to look like. Let me set my columns to 5. That will do. Now I'm going to come down to my Offset distance in direction area. This is where I can set my distance between my rows and columns. Let me click in the Row offset area and I am going to attempt a distance of 5 feet.

Now this is an architectural drawing so I have to use my apostrophe, 5 feet. Now the distance that I give is not the walking distance between my rows. This is a center to center distance. Let me set my Column offset to 5 feet. Now that I think I have this set pretty good I'm going to come down and click my Preview button and we will take a look at our array. When I select Preview I'm now in the preview mode of the command.

My little Array dialog here is kind of in my way. Let me click and drag this guy up a little so we can look at our copies. Now this doesn't look too bad. It looks like I have a little bit of extra space between my rows. I think I could maybe fit one more row of desks in this classroom. So since we are in the Preview mode I can either accept my array as it is. I can click my Cancel button and quit altogether or I can select Modify and make changes. I'm going to click Modify and let's make a change.

I'm going to reduce my Row offset. Let me set this to 4 feet to put these desks a little closer together and now I'm going to change my number of rows to 6. Once again I'm going to come down and click Preview and let's take a look. Let me move my Array dialog out of the way and yes ,that looks a lot better. I'm now able to fit 30 desks in this classroom as opposed to only 25. So this is exactly what I want. I'm going to click Accept to finish the Array command.

Let's look at the other type of array we can make. I'm going to zoom in on the teacher's desk. From here I can see a drawing of a gear. Now my arcs are a little bit broken down. Let me do a quick Regen. I'm going to come up to my View pull- down and select Regen to cleanup my arcs. Now I have a finished gear on the left side and I have just enough geometry to create another gear on the right side. This gear is a perfect opportunity for us to use the other option of Array and that is the Polar Array or a rotational copy.

Let's start by creating an array of this hole. I need four holes on the inside of this gear, so I'm going to copy this circle around the center of the gear to create four holes. I'm going to do that by using the Array command. Once again I'm going to come over to my Modify toolbar and click on the Array icon. This time I'm going to do a Polar Array. When I select the Polar Array option notice that my dialog changes to different settings because it's a different type of copy.

I'm going to come over and click Select objects and let's grab this circle. I will select the circle and then I will right-click. Now center point, at what point would I like to create my rotational copies around? Well, I don't know what the coordinate is so I'm going to come over and click this Pick Center Point button. This will allow me to select a coordinate on screen. Now I have a running Object Snap set for center point so I'm going to move my cursor in and I'm going to get my cursor close to that circle and click to grab the center of that circle.

Now number of items. Four is perfect. Notice it says the total number of items, not number of copies. So I want four holes when I'm done and my angle to fill is set to 360 degrees. We can see the preview on the side. I can enter any angle I wish for instance if I highlight this and set it to 90. Let me click on another field and let's take a look at our preview. Notice I would be creating a rotational copy four items within a 90 degree angle. Let me set this back to 360.

Let's click Preview and take a look. Perfect. That's exactly what I need. I'm going to click the Accept button to keep it. Now let's finish the teeth. If I look at the finished gear on the left side I can see that this guy has 30 teeth. I can see that based on this call out. Now if I zoom in on my geometry I can see that I have created just enough line work to produce one tooth and what I'm going to do is I'm going to array that tooth around the outside of the gear 30 times.

This will be much faster as I'm trying to draw each tooth by end. Let's complete the gear by using the Array command. I'm going to come over to my Modify toolbar and click the Array icon. Once again it's going to be a Polar Array. Let me select objects. I'm going to zoom in and click this line, this line, this line and this line. Those are the objects that I would like to array. Let me right-click to finish the selection. Center point, I'm going to click my Pick Center Point button and I would like to create my array around the center of this circle so all I have to do is put AutoCAD's cursor on the circle and click.

Now total number of items 30 and I would like those 30 items copied around a full 360 degree angle. Once again I'm going to click Preview. Perfect. That's exactly what I want. Let me click Accept. We will backup and that gear is finished. Always keep your eyes open for a chance to use the Array command. If you can train yourself to recognize rectangular and rotational patterns you can save yourself a lot of time by not having to do a bunch of tedious copying.

Show transcript

This video is part of

Image for AutoCAD 2008 Essential Training
AutoCAD 2008 Essential Training

87 video lessons · 9677 viewers

Jeff Bartels
Author

 
Expand all | Collapse all
  1. 3m 25s
    1. Welcome
      1m 6s
    2. Introduction to AutoCAD
      1m 28s
    3. Using the exercise files
      51s
  2. 23m 3s
    1. Modelspace
      2m 19s
    2. Toolbars
      3m 22s
    3. Pulldowns
      3m 36s
    4. AutoCAD's command line
      1m 44s
    5. Dockable palettes
      3m 21s
    6. The Status bar
      2m 58s
    7. Saving your workspace
      2m 10s
    8. Essential settings
      3m 33s
  3. 19m 1s
    1. Opening an AutoCAD drawing
      3m 0s
    2. Mouse functions
      2m 1s
    3. Zooming, panning, and regen
      5m 10s
    4. The multiple-document environment
      3m 23s
    5. Saving your work
      2m 32s
    6. Using templates
      2m 55s
  4. 16m 32s
    1. The Line command
      3m 16s
    2. ORTHO and POLAR modes
      5m 44s
    3. The Circle command
      3m 26s
    4. The Heads-Up display
      4m 6s
  5. 15m 48s
    1. Defining units of measure
      6m 12s
    2. Drafting with architectural units
      5m 0s
    3. Drafting with metric units
      4m 36s
  6. 20m 49s
    1. Cartesian coordinates
      5m 48s
    2. Object snaps
      10m 27s
    3. Automating object snaps
      4m 34s
  7. 23m 26s
    1. Rectangle
      4m 20s
    2. Ellipse
      5m 58s
    3. Hatch
      8m 33s
    4. Polygon
      4m 35s
  8. 23m 19s
    1. Move and Copy
      6m 43s
    2. Rotate
      5m 4s
    3. Offset
      6m 1s
    4. Erase
      2m 5s
    5. Undo and Redo
      3m 26s
  9. 12m 34s
    1. Windows and crossing windows
      4m 48s
    2. Removing from selections
      3m 42s
    3. Using key-ins
      4m 4s
  10. 1h 4m
    1. Trim and Extend
      6m 53s
    2. Fillet
      5m 1s
    3. Chamfer
      6m 35s
    4. Array
      8m 1s
    5. Mirror
      6m 52s
    6. Stretch
      5m 49s
    7. Scale
      5m 17s
    8. Grips
      7m 37s
    9. Explode
      4m 16s
    10. Polyline edit
      7m 46s
  11. 26m 0s
    1. Layers
      3m 30s
    2. The Layer Properties Manager
      9m 6s
    3. Layer control
      4m 29s
    4. The ByLayer property
      5m 26s
    5. The Layer Previous command
      3m 29s
  12. 43m 5s
    1. Single-line text
      3m 46s
    2. Text justification
      7m 2s
    3. Text styles
      7m 30s
    4. Multi-line text
      6m 28s
    5. Editing
      3m 24s
    6. Bulleted and numbered lists
      4m 5s
    7. Symbols
      6m 17s
    8. Spell-checking
      4m 33s
  13. 28m 58s
    1. Creating dimensions
      8m 35s
    2. Dimension styles
      6m 40s
    3. Callouts
      6m 40s
    4. Tweaking dimensions
      7m 3s
  14. 14m 48s
    1. The Distance command
      4m 15s
    2. The Property Changer
      6m 30s
    3. The Quick Calculator
      4m 3s
  15. 25m 8s
    1. Creating and inserting blocks
      10m 15s
    2. Using blocks
      5m 46s
    3. Modifying blocks
      4m 9s
    4. Building your library
      4m 58s
  16. 48m 29s
    1. Quick plots
      6m 40s
    2. Selecting a pen table
      5m 35s
    3. Layouts pt. 1: Choosing paper
      3m 21s
    4. Layouts pt. 2: Inserting a title block
      3m 11s
    5. Layouts pt. 3: Cutting a viewport
      6m 17s
    6. Layouts pt. 4: Reusing layouts
      4m 14s
    7. Scale factors
      3m 58s
    8. Sizing modelspace text
      7m 15s
    9. Sizing modelspace dimensions
      4m 47s
    10. Sizing linetypes
      3m 11s
  17. 9m 57s
    1. Drawing compatibility
      3m 4s
    2. E-transmitting
      3m 10s
    3. Saving to the Design Web format
      3m 43s
  18. 18s
    1. Goodbye
      18s

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