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Commands
The Text commands include:
Draw Text,
Character Alignment,
Character Height,
Character Rotation, and
Decimal Digits.
This command allows the user to draw a text string
on the plot. The x,y coordinate point of the lower left corner
of the text, and the text itself, are specified.
- The are 3 or more parameters:
- x position- x axis coordinate in NDC units.
- y position- y axis coordinate in NDC units.
- text string - the text string to be drawn.
- alternately x position and y position may be vectors, and text
string a character matrix
- colour matrix - optional matrix of colour names to be used to colour each of the text strings
Draw_Text(x position NDC´s,y position NDC´s,"text string"[,colour name matrix]);
Draw_Text(mm(150),mm(250),"My text string");
Draw_Text(xuser(-67.5),yuser(45.0),"Plot showing 1979 Scallop Catches");
draw_text(mm(20),mm(260),"blue",strfold("blue"))
draw_text(mm(20),mm(250),strfold("blue red green"),strfold("blue red green"))
draw_text(mm(60 70 80),mm(240 240 240),strfold("blue red green"),strfold("blue red green"))
See the example Data Points and Labels
This command allows the user to specify the character alignment
of subsequently drawn characters.
- There is 1 parameter:
- alignment - horizontal character alignment (0 = left, 1 = centered, 2 = right).
Character_Alignment(alignment)
Character_Alignment(0);
initial program state - left justified
This command allows the user to specify the height
of subsequently drawn characters.
The current character height (in NDCs) is stored in the built-in variable @character_height.
- There is 1 parameter:
- height - character height in NDC units.
Character_Height(height
NDC´s);
Character_Height(pts(12));
initial program state - 12 pt text
See the example Data Points and Labels
This command allows the user to make the drawn characters rotate at a given angle.
Note: PostScript_Output does not support Character_Rotation.
- There is 1 parameter:
- degree - degree of the angle that the character is supposed to rotate at. The default for this argument is 0.
Character_rotation(degree);
Character_rotation(180);
Draw_Text(mm(150),mm(250),"My text string");
This command allows the user to specify the number
of decimal digits to be used when drawing numbers in subsequently
drawn text. These are used in the Axis(), and Data_Labels() commands.
- There is 1 parameter:
- digits - the number of decimal digits to be plotted.
Decimal_Digits(digits);
Decimal_Digits(1);
initial program state - no decimal digits
See the example Data Points and Labels
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