PostGIS

ST_Letters
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ST_Letters

7.3. Geometry Constructors

Name

ST_Letters — Returns the input letters rendered as geometry with a default start position at the origin and default text height of 100.

Synopsis

+geometry +ST_Letters(+`text `+ letters, json + font+`)`;

Description

Uses a built-in font to render out a string as a multipolygon geometry. The default text height is 100.0, the distance from the bottom of a descender to the top of a capital. The default start position places the start of the baseline at the origin. Over-riding the font involves passing in a json map, with a character as the key, and base64 encoded TWKB for the font shape, with the fonts having a height of 1000 units from the bottom of the descenders to the tops of the capitals.

The text is generated at the origin by default, so to reposition and resize the text, first apply the ST_Scale function and then apply the ST_Translate function.

Availability: 3.3.0

Example: Generating the word 'Yo'

SELECT ST_AsText(ST_Letters('Yo'), 1);

st_letters01

Letters generated by ST_Letters

Example: Scaling and moving words

SELECT ST_Translate(ST_Scale(ST_Letters('Yo'), 10, 10), 100,100);