LA - Line attribute ; LA [ l, - Page 180

2001/10/02 

CHAPTER 4 HP-GL/2 - 32 

LA - Line attribute 

LA [ l, 

v

 [ , l , 

v

 [ , l , 

v

]]] [;] 

l

 ; line attribute 

v

 : value 

• 

This command specifies the shape of line joins and line ends. 

• 

These settings are effective for the line widths thicker than 0.35 mm. 

• 

l

 specifies the line attribute for which you are setting a value. 

• 

There are three line attributes - line end type,  line join type and miter limit,  specified by line attribute 
values of 1, 2 and 3 respectively. 

• 

v

 specifies the value of the particular attribute. 

• 

Line ends are either butt (1), square (2,), triangular (3) or round (4). 

• 

Line joins are either mitered (1), mitered/beveled (2), triangular (3), round (4), beveled (5), or have no join (6). 

• 

Miter limit is the ratio of miter length to line width.  When the miter limit is exceeded,  the join is clipped to 
the miter limit. 

• 

The miter limit is specified as a clamped real number. 

• 

If no parameters are specified, the line attributes are set as follows:  line ends are butt,  line joins are mitered 
and the miter limit is 5.  This  is equivalent to the command LA1, 1, 2, 1, 3, 5; 

Miter length

Line width

Miter limit = Miter length / Line width

• 

Labels are always drawn with rounded ends and joins.   

• 

An LA command remains in effect until another LA command is issued,  until default settings are restored 
with the DF command  or until the printer is initialized with an IN command. 

10 '-Line Attributes- 

20 WIDTH "LPT1:", 255 

30 LPRINT CHR$(27); "E"; 

40 LPRINT CHR$(27); "%0B"; 

50 LPRINT "IN;SP1;"; 

60 LPRINT "PA4000,3000;PW2;LA1,3;PD3500,2500,4000,2000;" 

70 LPRINT "PU3500,200;LA2,2,3,20;PD3000,2500,3000,2300;" 

80 LPRINT "PU2500,2300;LA1,4;PD3500,2300;" 

90 LPRINT "PU2700,2100;PD3300,2100;" 

100 LPRINT "PU2900,1900;PD3100,1900;" 

110 LPRINT CHR$(27); "%0A"; 

120 LPRINT CHR$(27); "E"; 

130 END 

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