Maptitude GISDK Help

SetManualLabels()

Summary

Changes the manual label settings for a layer.

 

Changes

In Version 6.0/2012 is still available but will now do nothing if called.

 

Syntax

SetManualLabels(string lyr_name, string label_expr, array options)

 

Argument

Contents

lyr_name

The name of the layer, or null for the current layer

label_expr

A field name, or an expression whose result is used as the label

 

Option

Type

Contents

Alignment

String

Desired label position relative to the feature, expressed as a compass direction ("NW", "N", "NE", "W", "C", "E", "SW', S", "SE")

Color

Color

Label color

Font

String

Font name, size and style

Format

String

Format to use when labeling a numeric field

Frame Border Style

Linestyle

Style of the frame border

Frame Border Color

Color

Color of the frame border

Frame Border Width

Real

Width of the frame in points

Frame Fill Color

Color

Color of the interior of the frame

Frame Fill Style

Fillstyle

Style used for the interior of the frame

Frame Shield

Array

The highway shield definition (string font_name, array of (integer index, color)).

Frame Type

String

Shape of the frame ("ellipse", "ectangle", "rounded rectangle", or "shield")

Framed

Boolean

Whether or not frames should be displayed around each label

Rotation

Boolean

Whether line labels should be rotated to align with the line feature

 

Notes

Example

// Set up for manual labeling

lyr = "U.S. States"

SetLayer(lyr)

SetManualLabels(lyr, "Name", {

     {"Font", "Arial|Bold|16"},

     {"Color", ColorRGB(50000,50000,0)}

     })

 

// Have the user click on a feature and get its ID

pt = ClickCoord()

id = RH2ID(LocateNearestRecord(pt, 0.25))

place_at_cursor = 1

relative_pos = "NE"

 

// When auto placing (placing at the location an auto label would be anchored),

// only the coord from "Location" is used

opts = { {"ID", id}, {"Layer", lyr} }

if place_at_cursor = 1 then opts = opts + { {"Place Auto", "False"},

     {"Location", {pt, relative_pos}} }

else opts = opts + { {"Place Auto", "True" }, {"Location", {pt, "N"}} }

// Add a manual label annotation

AddAnnotation( , "Label", opts)

 

Error Codes

Error Type

Meaning

Error

The label expression or an option is invalid or the specified layer does not exist

 

See Also

Function

Summary

AddAnnotation()

Adds an annotation to a map or layout window

GetManualLabelOptions()

Gets the manual label settings for a layer

SetLabels()

Enables or disables labeling for a layer or selection set

 

 

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