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Autodesk 057B1-41A111-1001 User Guide - Page 144

Overview of Lineweights, Lineweight Scale in Drawings

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Overview of Lineweights Lineweights are width values that are assigned to graphical objects as well as some types of text. Using lineweights, you can create heavy and thin lines to show cuts in sections, depth in elevations, dimension lines and tick marks, and differences in details. For example, by assigning varying lineweights to different layers, you can easily differentiate between new, existing, and demolition construction. Lineweights are not displayed unless the Show/Hide Lineweight button on the status bar is selected. TrueType fonts, raster images, points, and solid fills (2D solids) cannot display lineweight. Wide polylines show lineweights only when displayed outside of the plan view. You can export drawings to other applications or cut objects to the Clipboard and retain lineweight information. In model space, lineweights are displayed in pixels and do not change when zoomed in or out. Thus, you should not use lineweights to represent the exact width of an object in model space. For example, if you want to draw an object with a real-world width of 0.5 inches, do not use a lineweight; instead, use a polyline with a width of 0.5 inches to represent the object. You can also plot objects in your drawing with custom lineweight values. Use the Plot Style Table Editor to adjust the fixed lineweight values to plot at a new value. Lineweight Scale in Drawings Objects with a lineweight are plotted with the exact width of the assigned lineweight value. The standard settings for these values include BYLAYER, BYBLOCK, and Default. They are displayed in either inches or millimeters, with millimeters being the default. All layers are initially set to 0.25 mm, controlled by the LWDEFAULT system variable. A lineweight value of 0.025 mm or less is displayed as one pixel in model space and is plotted at the thinnest lineweight available on the specified plotting device. Lineweight values that you enter at the Command prompt are rounded to the nearest predefined value. You set the lineweight units and the default value in the Lineweight Settings dialog box. You can access the Lineweight Settings dialog box by using the LWEIGHT command, by right-clicking the Show/Hide Lineweight button on the status bar and choosing Settings. 124 | Chapter 6 Create and Modify Objects

Section	Page
Contents	3
Get Information	21
Find the Information You Need	21
Access and Search the Product Help	21
Learn the Product	22
View the Product Readme	23
Join the Customer Involvement Program	23
Join the Customer Involvement Program	24
Get Information from Drawings	24
Obtain General Drawing Information	24
The User Interface	27
Start a Command	27
Parts of the User Interface	27
The Menu Bar	28
The Tool Sets Palette	28
The Command Line	30
Overview of Using the Command Line	30
Enter Commands on the Command Line	31
Enter System Variables on the Command Line	33
Enter System Variables on the Command Line	33
Switch Between Dialog Boxes and the Command Line	34
View and Edit Within the Command History	34
Work with Shortcut Menus	35
About Keyboard Shortcuts	36
Control the Drawing Area Interface	42
Interface Themes and Background Color	42
Interface Themes and Background Color	42
Cursors in the Drawing Area	43
Selection Style	43
The UCS Icon	44
The Coordinates Display	45
Model Space and Layouts	45
Control Status, Layers, Properties, and Content	46
The Status Bar	46
The Status Bar	47
The Layers Palette	47
The Layers Palette	49
The Properties Inspector	50
The Content Palette	51
Customize the Drawing Environment	52
Set Interface Options	52
Set Up the Drawing Area	52
Specify the Behavior of Palettes	53
Performance Tuning	54
Customize Startup	54
Start and Save Drawings	57
Start a Drawing	57
Overview of Starting a New Drawing	57
Specify Units and Unit Formats	58
Determine the Units of Measurement	58
Set the Unit Format Conventions	59
Use a Drawing Template File	60
Add Identifying Information to Drawings	61
Open or Save a Drawing	61
Open a Drawing	61
Work with Multiple Open Drawings	64
Preview Open Drawings and Layouts	64
Switch Between Open Drawings	65
Switch Between Layouts in the Current Drawing	65
Transfer Information between Open Drawings	65
Save a Drawing	66
Find a Drawing File	69
Specify Search Paths and File Locations	69
Repair, Restore, or Recover Drawing Files	70
Repair a Damaged Drawing File	70
Create and Restore Backup Files	72
Recover from a System Failure	73
Control the Drawing Views	75
Change Views	75
Pan or Zoom a View	75
Save and Restore Views	77
Control the 3D Projection Style	78
Define a Parallel Projection	78
Choose Preset 3D Views	79
Define a 3D View with Coordinate Values or Angles	79
Change to a View of the XY Plane	80
Hide Lines or Shade 3D Objects	80
Hide Lines in 3D Objects	80
Add Simple Shading to 3D Objects	81
Display Multiple Views in Model Space	83
Set Model Space Viewports	83
Select and Use the Current Viewport	85
Save and Restore Model Layout Viewport Arrangements	85
Organize Drawings and Layouts	87
Create Single-View Drawings (Model Space)	87
Quick Start for Model Space Drafting	87
Draw, Scale, and Annotate in Model Space	88
Create Multiple-View Drawing Layouts (Paper Space)	91
Quick Start for Layouts	91
Understand the Layout Process	91
Work with Model Space and Paper Space	92
Work in Model Space	93
Work on a Named Layout	93
Access Model Space from a Layout Viewport	94
Create and Modify Layout Viewports	95
Control Views in Layout Viewports	96
Scale Views in Layout Viewports	97
Control Visibility in Layout Viewports	98
Freeze Specified Layers in a Layout Viewport	98
Screen Objects in Layout Viewports	99
Turn Layout Viewports On or Off	100
Scale Linetypes in Layout Viewports	101
Align Views in Layout Viewports	101
Rotate Views in Layout Viewports	102
Reuse Layouts and Layout Settings	103
Work with Layouts in a Project	104
Quick Start for Projects	104
Understand the Project Manager Interface	105
Create and Manage a Project	106
Create a Project	107
Create and Modify Layouts in a Project	109
Work with Views on Layouts	111
Organize a Project with Groups	111
Include Information with Projects, Groups, Layouts, and Views	112
Publish Layouts and Projects	113
Use Projects in a Team	114
Use Projects in a Multiple Operating System Environment	116
Create and Modify Objects	119
Control the Properties of Objects	119
Work with Object Properties	119
Overview of Object Properties	119
Display and Change the Properties of Objects	120
Copy Properties Between Objects	121
Work with Layers	121
Overview of Layers	121
Use Layers to Manage Complexity	122
Create and Name Layers	125
Change Layer Settings and Layer Properties	126
Override Layer Properties in Viewports	127
Group and Sort the List of Layers	129
Reconcile New Layers	133
Work with Layer States	133
Save, Restore, and Edit Layer States	134
Import and Export Layer States	135
Work with Colors	136
Set the Current Color	136
Change the Color of an Object	137
Use Color Books	138
Work with Linetypes	139
Overview of Linetypes	139
Load Linetypes	140
Set the Current Linetype	140
Change the Linetype of an Object	141
Control Linetype Scale	142
Display Linetypes on Short Segments and Polylines	143
Control Lineweights	143
Overview of Lineweights	144
Display Lineweights	145
Set the Current Lineweight	146
Change the Lineweight of an Object	146
Control the Display Properties of Certain Objects	147
Control the Display of Polylines, Hatches, Gradient Fills, Lineweights, and Text	147
Control the Transparency of Objects	149
Control the Transparency of Objects	149
Control How Overlapping Objects Are Displayed	149
Control the Display of Objects	150
Use Precision Tools	150
Work with the User Coordinate System (UCS)	150
Overview of the User Coordinate System (UCS)	150
Control the User Coordinate System (UCS)	151
Work with Named UCS Definitions and Preset Orientations	152
Control the Display of the User Coordinate System Icon	152
Enter Coordinates to Specify Points	154
Overview of Coordinate Entry	154
Enter 2D Coordinates	155
Enter Cartesian Coordinates	155
Enter Cartesian Coordinates	157
Enter Polar Coordinates	157
Enter Polar Coordinates	159
Enter 3D Coordinates	159
Enter 3D Cartesian Coordinates	160
Enter 3D Cartesian Coordinates	161
Enter Cylindrical Coordinates	161
Enter Cylindrical Coordinates	162
Enter Spherical Coordinates	163
Enter Spherical Coordinates	164
Use Dynamic Input	164
Snap to Locations on Objects (Object Snaps)	166
Use Object Snaps	167
The Object Snap Menu	168
Set Visual Aids for Object Snaps (AutoSnap)	168
Override Object Snap Settings	169
Restrict Cursor Movement	171
Adjust Grid and Grid Snap	171
Use Orthogonal Locking (Ortho Mode)	173
Use Polar Tracking and PolarSnap	174
Lock an Angle for One Point (Angle)	176
Combine or Offset Points and Coordinates	177
Combine Coordinate Values (Coordinate Filters)	177
Combine Coordinate Values (Coordinate Filters)	179
Track to Points on Objects (Object Snap Tracking)	180
Track to Offset Point Locations (Tracking)	182
Specify Distances	182
Enter Direct Distances	182
Offset from Temporary Reference Points	183
Specify Intervals on Objects	183
Overview of Specifying Intervals on Objects	183
Specify Measured Intervals on Objects	184
Divide an Object into Equal Segments	185
Extract Geometric Information from Objects	185
Obtain Distances, Angles, and Point Locations	185
Obtain Area and Mass Properties Information	186
Use a Calculator	190
Use the Command Prompt Calculator	190
Use the Command Prompt Calculator	192
Create Objects	192
Draw Linear Objects	192
Draw Lines	193
Draw Polylines	193
Draw Rectangles and Polygons	195
Draw Freehand Sketches	196
Draw Curved Objects	197
Draw Arcs	197
Draw Circles	201
Draw Polyline Arcs	202
Draw Donuts	204
Draw Ellipses	205
Draw Splines	206
Draw Construction and Reference Geometry	209
Draw Reference Points	210
Draw Construction Lines (and Rays)	210
Create and Combine Areas (Regions)	211
Create Revision Clouds	213
Select and Modify Objects	214
Select Objects	214
Select Objects Individually	215
Select Multiple Objects	216
Prevent Objects from Being Selected	218
Select Objects by Properties	218
Customize Object Selection	219
Group Objects	221
Overview of Groups	221
Create Groups	221
Select Objects in Groups	222
Edit Groups	222
Correct Mistakes	223
Erase Objects	224
Cut, Copy, and Paste with the Clipboard	225
Modify Objects	226
Choose a Method to Modify Objects	226
Modify Objects Using Grips	227
Use Object Grips	227
Make Multiple Copies with Grips	229
Control Grips in Blocks	231
Move or Rotate Objects	231
Move Objects	232
Rotate Objects	233
Align Objects	234
Copy, Array, Offset, or Mirror Objects	235
Copy Objects	235
Array Objects	237
Overview of Arrays	237
Create Rectangular Arrays	238
Create Path Arrays	239
Create Polar Arrays	240
Edit Associative Arrays	241
Limit the Size of Arrays	244
Offset an Object	244
Mirror Objects	246
Change the Size and Shape of Objects	247
Trim or Extend Objects	247
Resize or Reshape Objects	252
Fillet, Chamfer, Break, or Join Objects	254
Create Fillets	254
Create Chamfers	258
Break and Join Objects	261
Disassociate Compound Objects (Explode)	262
Modify Polylines	263
Modify Splines	265
Add Constraints to Geometry	268
Overview of Constraints	268
Constrain Objects Geometrically	271
Overview of Geometric Constraints	271
Apply or Remove Geometric Constraints	272
Display and Verify Geometric Constraints	276
Modify Objects with Geometric Constraints Applied	277
Constrain Distances and Angles between Objects	279
Overview of Dimensional Constraints	279
Control the Display of Dimensional Constraints	281
Modify Objects with Dimensional Constraints Applied	281
Constrain a Design with Formulas and Equations	283
Overview of Formulas and Equations	283
Control Geometry with Parameters	284
Define and Reference Blocks	289
Work with Blocks	289
Overview of Blocks	289
Insert Blocks	291
Work with Dynamic Blocks in Drawings	293
Overview of Dynamic Blocks	293
Work With Action Parameters in Blocks	295
Work With Constraint Parameters in Blocks	297
Remove Block Definitions	298
Create and Modify Blocks	298
Define Blocks	298
Create Blocks Within a Drawing	299
Create Drawing Files for Use as Blocks	300
Control the Color and Linetype Properties in Blocks	301
Nest Blocks	303
Create Block Libraries	304
Attach Data to Blocks (Block Attributes)	305
Overview of Block Attributes	305
Define Block Attributes	307
Extract Block Attribute Data (Advanced)	309
Modify Blocks	314
Modify a Block Definition	314
Modify the Data in Block Attributes	316
Modify a Block Attribute Definition	316
Disassemble a Block Reference (Explode)	318
Work with 3D Models	319
Create 3D Models	319
Create Wireframe Models	319
Add 3D Thickness to Objects	321
Annotate Drawings	323
Work with Annotations	323
Overview of Annotations	323
Scale Annotations	324
Overview of Scaling Annotations	324
Set Annotation Scale	325
Set Annotation Scale	325
Create Annotative Objects	326
Overview of Creating Annotative Objects	326
Overview of Creating Annotative Objects	326
Work with Annotative Styles	328
Work with Annotative Styles	328
Create Annotative Text	329
Create Annotative Text	329
Create Annotative Dimensions and Tolerances	329
Create Annotative Dimensions and Tolerances	330
Create Annotative Leaders and Multileaders	331
Create Annotative Leaders and Multileaders	331
Create Annotative Blocks and Attributes	331
Create Annotative Blocks and Attributes	331
Create Annotative Hatches	333
Create Annotative Hatches	333
Display Annotative Objects	334
Display Annotative Objects	334
Add and Modify Scale Representations	335
Add and Modify Scale Representations	335
Set Orientation for Annotations	336
Set Orientation for Annotations	337
Hatches, Fills, and Wipeouts	338
Overview of Hatch Patterns and Fills	338
Specify Hatch and Fill Areas	339
Control the Appearance of Hatches	343
Choose a Hatch Pattern or Fill	343
Control the Hatch Origin Point	344
Control the Scale of Hatch Patterns	344
Set Property Overrides for Hatches and Fills	345
Control the Display of Hatch Boundaries	345
Control the Draw Order of Hatches and Fills	346
Modify Hatches and Fills	346
Modify Hatch Properties	347
Modify Hatch Alignment, Scale, and Rotation	347
Reshape a Hatch or Fill	348
Re-create the Boundary of a Hatch or Fill	349
Create a Blank Area to Cover Objects	350
Notes and Labels	351
Overview of Notes and Labels	351
Create Text	351
Overview of Creating Text	351
Create Single-Line Text	352
Create Multiline Text	354
Overview of Multiline Text	354
Justify Multiline Text	356
Format Characters Within Multiline Text	357
Create Lists in Multiline Text	357
Indent Multiline Text and Use Tabs	359
Specify the Line Spacing Within Multiline Text	360
Create Stacked Characters Within Multiline Text	360
Create and Edit Columns in Multiline Text	362
Import Text from External Files	363
Create Leaders	363
Overview of Leader Objects	363
Create and Modify Leaders	364
Modify Leaders Using Grips	366
Work with Leader Styles	367
Add Content to a Leader	367
Use Fields in Text	370
Insert Fields	370
Update Fields	371
Work with Text Styles	373
Overview of Text Styles	374
Assign Text Fonts	376
Overview of Assigning Text Fonts	376
Use TrueType Fonts	377
Use Text Fonts for International Work	377
Substitute Fonts	379
Set Text Height	381
Set Text Height	381
Set Text Obliquing Angle	382
Set Horizontal or Vertical Text Orientation	383
Change Text	383
Overview of Changing Text	384
Change Single-Line Text	384
Change Multiline Text	384
Find and Replace Text	385
Check Spelling	386
Format Multiline Text at the Command Prompt	387
Tables	390
Create and Modify Tables	390
Work with Table Styles	392
Add Text and Blocks to Tables	393
Use Formulas in Table Cells	394
Dimensions and Tolerances	395
Understand Basic Concepts of Dimensioning	395
Overview of Dimensioning	395
Parts of a Dimension	396
Associative Dimensions	397
Use Dimension Styles	399
Overview of Dimension Styles	399
Compare Dimension Styles and Variables	399
Control Dimension Geometry	400
Control Dimension Lines	400
Control Extension Lines	401
Control Dimension Arrowheads	404
Customize Arrowheads	404
Control Dimension Text	405
Fit Dimension Text Within Extension Lines	405
Control the Location of Dimension Text	407
Control the Appearance of Dimension Text	410
Control Dimension Values	411
Control the Display of Dimension Units	411
Round Off Dimension Values	413
Suppress Zeros in Dimensions	413
Display Lateral Tolerances	414
Control the Display of Fractions	416
Set the Scale for Dimensions	417
Create Dimensions	418
Create Linear Dimensions	418
Overview of Creating Linear Dimensions	419
Create Horizontal and Vertical Dimensions	419
Create Aligned Dimensions	420
Create Baseline and Continued Dimensions	420
Create Rotated Dimensions	421
Create Dimensions with Oblique Extension Lines	421
Create Radial Dimensions	422
Create Angular Dimensions	426
Create Ordinate Dimensions	428
Create Arc Length Dimensions	430
Modify Existing Dimensions	430
Modify A Dimension	431
Overview of Modifying Dimensions	431
Modify Dimension Geometry	431
Change Dimension Associativity	434
Modify Dimension Text	436
Dimension Jog	437
Convert Dimensions into Inspection Dimensions	438
Break a Dimension Line	439
Adjust Dimension Spacing	442
Apply a New Dimension Style to Existing Dimensions	443
Override a Dimension Style	443
Add Geometric Tolerances	444
Overview of Geometric Tolerances	444
Material Conditions	446
Datum Reference Frames	446
Projected Tolerance Zones	447
Composite Tolerances	447
Plot and Publish Drawings	449
Specify Settings for Plotting	449
Save Plot Settings as Named Page Setups	449
Reuse Named Page Setups	450
Specify Page Setup Settings	451
Select a Printer or Plotter for a Layout	451
Select a Paper Size for a Layout	451
Determine the Drawing Orientation of a Layout	452
Set the Plot Area of a Layout	452
Adjust the Plot Offset of a Layout	453
Set the Plot Scale for a Layout	453
Set the Lineweight Scale for a Layout	454
Select a Plot Style Table for a Layout	454
Set Shaded Viewport and Plot Options for a Layout	454
Named Page Setups with Projects	455
Print or Plot Drawings	455
Overview of Plotting	455
Use a Page Setup to Specify Plot Settings	457
Select a Printer or Plotter	458
Specify the Area to Plot	458
Set Paper Size	459
Position the Drawing on the Paper	459
Specify the Printable Area	459
Set the Position of the Plot	460
Set Drawing Orientation	460
Control How Objects Are Plotted	461
Set Plot Scale	461
Set Options for Plotted Objects	462
Use Plot Styles to Control Plotted Objects	463
Overview of Plot Styles	463
Choose a Type of Plot Style Table	464
Assign Plot Style Tables to Layouts	464
Manage Plot Style Tables	465
Use Color-Dependent Plot Style Tables	465
Use Named Plot Style Tables	466
Use Named Plot Styles	466
Manage Named Plot Styles	467
Use Predefined Named Plot Style Tables	467
Change Plot Style Settings	468
Overview of Plot Style Settings	468
Set Color, Screening, Grayscale, and Dither in Plot Style Tables	468
Control Plotted Lineweight and Linetype	469
Assign Plotted Line End and Join Styles	470

Match case Limit results 1 per page

Overview of Lineweights

Lineweights are width values that are assigned to graphical objects as well as

some types of text.

Using lineweights, you can create heavy and thin lines to show cuts in sections,

depth in elevations, dimension lines and tick marks, and differences in details.

For example, by assigning varying lineweights to different layers, you can

easily differentiate between new, existing, and demolition construction.

Lineweights are not displayed unless the Show/Hide Lineweight button on

the status bar is selected.

TrueType fonts, raster images, points, and solid fills (2D solids) cannot display

lineweight. Wide polylines show lineweights only when displayed outside of

the plan view. You can export drawings to other applications or cut objects

to the Clipboard and retain lineweight information.

In model space, lineweights are displayed in pixels and do not change when

zoomed in or out. Thus, you should not use lineweights to represent the exact

width of an object in model space. For example, if you want to draw an object

with a real-world width of 0.5 inches, do not use a lineweight; instead, use a

polyline with a width of 0.5 inches to represent the object.

You can also plot objects in your drawing with custom lineweight values. Use

the Plot Style Table Editor to adjust the fixed lineweight values to plot at a

new value.

Lineweight Scale in Drawings

Objects with a lineweight are plotted with the exact width of the assigned

lineweight value. The standard settings for these values include BYLAYER,

BYBLOCK, and Default. They are displayed in either inches or millimeters,

with millimeters being the default. All layers are initially set to 0.25 mm,

controlled by the LWDEFAULT system variable.

A lineweight value of 0.025 mm or less is displayed as one pixel in model

space and is plotted at the thinnest lineweight available on the specified

plotting device. Lineweight values that you enter at the Command prompt

are rounded to the nearest predefined value.

You set the lineweight units and the default value in the Lineweight Settings

dialog box. You can access the Lineweight Settings dialog box by using the

LWEIGHT command, by right-clicking the Show/Hide Lineweight button on

the status bar and choosing Settings.

124

| Chapter 6

Create and Modify Objects