Package mapnik :: Module printing

Module printing

Mapnik classes to assist in creating printable maps

basic usage is along the lines of

import mapnik

page = mapnik.printing.PDFPrinter() m = mapnik.Map(100,100) mapnik.load_map(m, "my_xml_map_description", True) m.zoom_all() page.render_map(m,"my_output_file.pdf")

see the documentation of mapnik.printing.PDFPrinter() for options

Classes
	centering Style of centering to use with the map, the default is constrained
	resolutions some predefined resolutions in DPI
	PDFPrinter Main class for creating PDF print outs, basically contruct an instance with appropriate options and then call render_map with your mapnik map

Functions

m2pt(x)
convert distance from meters to points

pt2m(x)
convert distance from points to meters

m2in(x)
convert distance from meters to inches

m2px(x, resolution)
convert distance from meters to pixels at the given resolution in DPI/PPI

any_scale(scale)
Scale helper function that allows any scale

sequence_scale(scale, scale_sequence)
Default scale helper, this rounds scale to a 'sensible' value

default_scale(scale)
Default scale helper, this rounds scale to a 'sensible' value

deg_min_sec_scale(scale)

format_deg_min_sec(value)

round_grid_generator(first, last, step)

convert_pdf_pages_to_layers(filename, output_name=None, layer_names=(), reverse_all_but_last=True)
opens the given multipage PDF and converts each page to be a layer in a single page PDF layer_names should be a sequence of the user visible names of the layers, if not given or if shorter than num pages generic names will be given to the unnamed layers

Variables
	HAS_PYCAIRO_MODULE = `True`
	HAS_PANGOCAIRO_MODULE = `False`
	HAS_PYPDF = `False`
	pagesizes = `{'a0': (0.841, 1.189), 'a0l': (1.189, 0.841), 'a1'...` size of a pt in meters
	pt_size = `0.000352777777778`
	__package__ = `'mapnik'`

Function Details

convert_pdf_pages_to_layers(filename, output_name=None, layer_names=`()`, reverse_all_but_last=True)

opens the given multipage PDF and converts each page to be a layer in a single page PDF layer_names should be a sequence of the user visible names of the layers, if not given or if shorter than num pages generic names will be given to the unnamed layers

if output_name is not provided a temporary file will be used for the conversion which will then be copied back over the source file.

requires pyPdf >= 1.13 to be available

Variables Details

pagesizes

size of a pt in meters

Value:

{'a0': (0.841, 1.189),
 'a0l': (1.189, 0.841),
 'a1': (0.594, 0.841),
 'a10': (0.026, 0.037),
 'a10l': (0.037, 0.026),
 'a1l': (0.841, 0.594),
 'a2': (0.42, 0.594),
 'a2l': (0.594, 0.42),
...

Module printing

convert_pdf_pages_to_layers(filename, output_name=None, layer_names=(), reverse_all_but_last=True)

pagesizes

convert_pdf_pages_to_layers(filename, output_name=None, layer_names=`()`, reverse_all_but_last=True)