1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
|
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from nose.tools import *
from utilities import execution_path, run_all
import os, mapnik
try:
import json
except ImportError:
import simplejson as json
def setup():
# All of the paths used are relative, if we run the tests
# from another directory we need to chdir()
os.chdir(execution_path('.'))
def show_grids(name,g1,g2):
g1_file = '/tmp/mapnik-%s-actual.json' % name
open(g1_file,'w').write(json.dumps(g1,sort_keys=True))
g2_file = '/tmp/mapnik-%s-expected.json' % name
open(g2_file,'w').write(json.dumps(g2,sort_keys=True))
val = 'JSON does not match ->\n'
if g1['grid'] != g2['grid']:
val += ' X grid does not match\n'
else:
val += ' ✓ grid matches\n'
if g1['data'].keys() != g2['data'].keys():
val += ' X data does not match\n'
else:
val += ' ✓ data matches\n'
if g1['keys'] != g2['keys']:
val += ' X keys do not\n'
else:
val += ' ✓ keys match\n'
val += '\n\t%s\n\t%s' % (g1_file,g2_file)
return val
def show_grids2(name,g1,g2):
g2_expected = '../data/grids/mapnik-%s-actual.json' % name
if not os.path.exists(g2_expected):
# create test fixture based on actual results
open(g2_expected,'a+').write(json.dumps(g1,sort_keys=True))
return
g1_file = '/tmp/mapnik-%s-actual.json' % name
open(g1_file,'w').write(json.dumps(g1,sort_keys=True))
val = 'JSON does not match ->\n'
if g1['grid'] != g2['grid']:
val += ' X grid does not match\n'
else:
val += ' ✓ grid matches\n'
if g1['data'].keys() != g2['data'].keys():
val += ' X data does not match\n'
else:
val += ' ✓ data matches\n'
if g1['keys'] != g2['keys']:
val += ' X keys do not\n'
else:
val += ' ✓ keys match\n'
val += '\n\t%s\n\t%s' % (g1_file,g2_expected)
return val
# first pass impl where resolution is passed as render
# time rather than encoding time, likely will be deprecated soon
grid_correct_old = {"keys": ["", "North West", "North East", "South West", "South East"], "data": {"South East": {"Name": "South East"}, "North East": {"Name": "North East"}, "North West": {"Name": "North West"}, "South West": {"Name": "South West"}}, "grid": [" ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " !!! ### ", " !!!!! ##### ", " !!!!! ##### ", " !!! ### ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " $$$$ %%%% ", " $$$$$ %%%%% ", " $$$$$ %%%%% ", " $$$ %%% ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " "]}
# now using svg rendering
grid_correct_old2 = {"data": {"North East": {"Name": "North East"}, "North West": {"Name": "North West"}, "South East": {"Name": "South East"}, "South West": {"Name": "South West"}}, "grid": [" ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " !!! ### ", " !!! ### ", " !!! ### ", " !!! ### ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " $$$ %%% ", " $$$ %%% ", " $$$ %%% ", " $$$ %%% ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " "], "keys": ["", "North West", "North East", "South West", "South East"]}
grid_correct_old3 = {"data": {"North East": {"Name": "North East"}, "North West": {"Name": "North West"}, "South East": {"Name": "South East"}, "South West": {"Name": "South West"}}, "grid": [" ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " !!! ### ", " !!! ### ", " !!! ### ", " !!! ### ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " $$$ %%% ", " $$$ %%% ", " $$$ %%% ", " $$ %% ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " "], "keys": ["", "North West", "North East", "South West", "South East"]}
# previous rendering using agg ellipse directly
grid_correct_new = {"data": {"North East": {"Name": "North East"}, "North West": {"Name": "North West"}, "South East": {"Name": "South East"}, "South West": {"Name": "South West"}}, "grid": [" ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " !! ## ", " !!! ### ", " !! ## ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " $$ %% ", " $$$ %% ", " $$ %% ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " "], "keys": ["", "North West", "North East", "South West", "South East"]}
# newer rendering using svg
grid_correct_new2 = {"data": {"North East": {"Name": "North East"}, "North West": {"Name": "North West"}, "South East": {"Name": "South East"}, "South West": {"Name": "South West"}}, "grid": [" ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " !! ## ", " !!! ### ", " !! ## ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " $$ %% ", " $$$ %% ", " $$ %% ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " "], "keys": ["", "North West", "North East", "South West", "South East"]}
grid_correct_new3 = {"data": {"North East": {"Name": "North East"}, "North West": {"Name": "North West"}, "South East": {"Name": "South East"}, "South West": {"Name": "South West"}}, "grid": [" ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " !! ## ", " !!! ### ", " !! ## ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " $$ %% ", " $$$ %% ", " $ %% ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " "], "keys": ["", "North West", "North East", "South West", "South East"]}
def resolve(grid,row,col):
""" Resolve the attributes for a given pixel in a grid.
"""
row = grid['grid'][row]
utf_val = row[col]
#http://docs.python.org/library/functions.html#ord
codepoint = ord(utf_val)
if (codepoint >= 93):
codepoint-=1
if (codepoint >= 35):
codepoint-=1
codepoint -= 32
key = grid['keys'][codepoint]
return grid['data'].get(key)
def create_grid_map(width,height,sym):
ds = mapnik.MemoryDatasource()
context = mapnik.Context()
context.push('Name')
f = mapnik.Feature(context,1)
f['Name'] = 'South East'
f.add_geometries_from_wkt('POINT (143.10 -38.60)')
ds.add_feature(f)
f = mapnik.Feature(context,2)
f['Name'] = 'South West'
f.add_geometries_from_wkt('POINT (142.48 -38.60)')
ds.add_feature(f)
f = mapnik.Feature(context,3)
f['Name'] = 'North West'
f.add_geometries_from_wkt('POINT (142.48 -38.38)')
ds.add_feature(f)
f = mapnik.Feature(context,4)
f['Name'] = 'North East'
f.add_geometries_from_wkt('POINT (143.10 -38.38)')
ds.add_feature(f)
s = mapnik.Style()
r = mapnik.Rule()
sym.allow_overlap = True
r.symbols.append(sym)
s.rules.append(r)
lyr = mapnik.Layer('Places')
lyr.datasource = ds
lyr.styles.append('places_labels')
m = mapnik.Map(width,height)
m.append_style('places_labels',s)
m.layers.append(lyr)
return m
def test_render_grid_old():
""" test old method """
width,height = 256,256
symb = mapnik.PointSymbolizer(mapnik.PathExpression('../data/images/dummy.png'))
sym = mapnik.MarkersSymbolizer()
sym.width = mapnik.Expression('10')
sym.height = mapnik.Expression('10')
m = create_grid_map(width,height,sym)
#print mapnik.save_map_to_string(m)
ul_lonlat = mapnik.Coord(142.30,-38.20)
lr_lonlat = mapnik.Coord(143.40,-38.80)
m.zoom_to_box(mapnik.Box2d(ul_lonlat,lr_lonlat))
grid = mapnik.render_grid(m,0,key='Name',resolution=4,fields=['Name'])
eq_(grid,grid_correct_old3,show_grids('old-markers',grid,grid_correct_old3))
eq_(resolve(grid,0,0),None)
# check every pixel of the nw symbol
expected = {"Name": "North West"}
# top row
eq_(resolve(grid,23,9),expected)
eq_(resolve(grid,23,10),expected)
eq_(resolve(grid,23,11),expected)
def test_render_grid_new():
""" test old against new"""
width,height = 256,256
sym = mapnik.MarkersSymbolizer()
sym.width = mapnik.Expression('10')
sym.height = mapnik.Expression('10')
m = create_grid_map(width,height,sym)
ul_lonlat = mapnik.Coord(142.30,-38.20)
lr_lonlat = mapnik.Coord(143.40,-38.80)
m.zoom_to_box(mapnik.Box2d(ul_lonlat,lr_lonlat))
# new method
grid = mapnik.Grid(m.width,m.height,key='Name')
mapnik.render_layer(m,grid,layer=0,fields=['Name'])
utf1 = grid.encode('utf',resolution=4)
eq_(utf1,grid_correct_new3,show_grids('new-markers',utf1,grid_correct_new3))
# check a full view is the same as a full image
grid_view = grid.view(0,0,width,height)
# for kicks check at full res too
utf3 = grid.encode('utf',resolution=1)
utf4 = grid_view.encode('utf',resolution=1)
eq_(utf3['grid'],utf4['grid'])
eq_(utf3['keys'],utf4['keys'])
eq_(utf3['data'],utf4['data'])
eq_(resolve(utf4,0,0),None)
# resolve some center points in the
# resampled view
utf5 = grid_view.encode('utf',resolution=4)
eq_(resolve(utf5,25,10),{"Name": "North West"})
eq_(resolve(utf5,25,46),{"Name": "North East"})
eq_(resolve(utf5,38,10),{"Name": "South West"})
eq_(resolve(utf5,38,46),{"Name": "South East"})
grid_feat_id = {'keys': ['', '3', '4', '2', '1'], 'data': {'1': {'Name': 'South East'}, '3': {'Name': u'North West'}, '2': {'Name': 'South West'}, '4': {'Name': 'North East'}}, 'grid': [' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' !! ## ', ' !!! ### ', ' !! ## ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' $$$ %% ', ' $$$ %%% ', ' $$ %% ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ']}
grid_feat_id2 = {"data": {"1": {"Name": "South East"}, "2": {"Name": "South West"}, "3": {"Name": "North West"}, "4": {"Name": "North East"}}, "grid": [" ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " !! ## ", " !!! ### ", " !! ## ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " $$ %% ", " $$$ %% ", " $$ %% ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " "], "keys": ["", "3", "4", "2", "1"]}
grid_feat_id3 = {"data": {"1": {"Name": "South East", "__id__": 1}, "2": {"Name": "South West", "__id__": 2}, "3": {"Name": "North West", "__id__": 3}, "4": {"Name": "North East", "__id__": 4}}, "grid": [" ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " !! ## ", " !!! ### ", " !! ## ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " $$ %% ", " $$$ %% ", " $ %% ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " "], "keys": ["", "3", "4", "2", "1"]}
def test_render_grid3():
""" test using feature id"""
width,height = 256,256
sym = mapnik.MarkersSymbolizer()
sym.width = mapnik.Expression('10')
sym.height = mapnik.Expression('10')
m = create_grid_map(width,height,sym)
ul_lonlat = mapnik.Coord(142.30,-38.20)
lr_lonlat = mapnik.Coord(143.40,-38.80)
m.zoom_to_box(mapnik.Box2d(ul_lonlat,lr_lonlat))
grid = mapnik.Grid(m.width,m.height,key='__id__')
mapnik.render_layer(m,grid,layer=0,fields=['__id__','Name'])
utf1 = grid.encode('utf',resolution=4)
eq_(utf1,grid_feat_id3,show_grids('id-markers',utf1,grid_feat_id3))
# check a full view is the same as a full image
grid_view = grid.view(0,0,width,height)
# for kicks check at full res too
utf3 = grid.encode('utf',resolution=1)
utf4 = grid_view.encode('utf',resolution=1)
eq_(utf3['grid'],utf4['grid'])
eq_(utf3['keys'],utf4['keys'])
eq_(utf3['data'],utf4['data'])
eq_(resolve(utf4,0,0),None)
# resolve some center points in the
# resampled view
utf5 = grid_view.encode('utf',resolution=4)
eq_(resolve(utf5,25,10),{"Name": "North West","__id__": 3})
eq_(resolve(utf5,25,46),{"Name": "North East","__id__": 4})
eq_(resolve(utf5,38,10),{"Name": "South West","__id__": 2})
eq_(resolve(utf5,38,46),{"Name": "South East","__id__": 1})
def gen_grid_for_id(pixel_key):
ds = mapnik.MemoryDatasource()
context = mapnik.Context()
context.push('Name')
f = mapnik.Feature(context,pixel_key)
f['Name'] = str(pixel_key)
f.add_geometries_from_wkt('POLYGON ((0 0, 0 256, 256 256, 256 0, 0 0))')
ds.add_feature(f)
s = mapnik.Style()
r = mapnik.Rule()
symb = mapnik.PolygonSymbolizer()
r.symbols.append(symb)
s.rules.append(r)
lyr = mapnik.Layer('Places')
lyr.datasource = ds
lyr.styles.append('places_labels')
width,height = 256,256
m = mapnik.Map(width,height)
m.append_style('places_labels',s)
m.layers.append(lyr)
m.zoom_all()
grid = mapnik.Grid(m.width,m.height,key='__id__')
mapnik.render_layer(m,grid,layer=0,fields=['__id__','Name'])
return grid
def test_negative_id():
grid = gen_grid_for_id(-1)
eq_(grid.get_pixel(128,128),-1)
utf1 = grid.encode('utf',resolution=4)
eq_(utf1['keys'],['-1'])
def test_32bit_int_id():
int32 = 2147483647
grid = gen_grid_for_id(int32)
eq_(grid.get_pixel(128,128),int32)
utf1 = grid.encode('utf',resolution=4)
eq_(utf1['keys'],[str(int32)])
max_neg = -(int32)
grid = gen_grid_for_id(max_neg)
eq_(grid.get_pixel(128,128),max_neg)
utf1 = grid.encode('utf',resolution=4)
eq_(utf1['keys'],[str(max_neg)])
def test_64bit_int_id():
int64 = 0x7FFFFFFFFFFFFFFF
grid = gen_grid_for_id(int64)
eq_(grid.get_pixel(128,128),int64)
utf1 = grid.encode('utf',resolution=4)
eq_(utf1['keys'],[str(int64)])
max_neg = -(int64)
grid = gen_grid_for_id(max_neg)
eq_(grid.get_pixel(128,128),max_neg)
utf1 = grid.encode('utf',resolution=4)
eq_(utf1['keys'],[str(max_neg)])
def test_id_zero():
grid = gen_grid_for_id(0)
eq_(grid.get_pixel(128,128),0)
utf1 = grid.encode('utf',resolution=4)
eq_(utf1['keys'],['0'])
line_expected = {"keys": ["", "1"], "data": {"1": {"Name": "1"}}, "grid": [" !", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", " !! ", "!! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! ", " ! "]}
def test_line_rendering():
ds = mapnik.MemoryDatasource()
context = mapnik.Context()
context.push('Name')
pixel_key = 1
f = mapnik.Feature(context,pixel_key)
f['Name'] = str(pixel_key)
f.add_geometries_from_wkt('LINESTRING (30 10, 10 30, 40 40)')
ds.add_feature(f)
s = mapnik.Style()
r = mapnik.Rule()
symb = mapnik.LineSymbolizer()
r.symbols.append(symb)
s.rules.append(r)
lyr = mapnik.Layer('Places')
lyr.datasource = ds
lyr.styles.append('places_labels')
width,height = 256,256
m = mapnik.Map(width,height)
m.append_style('places_labels',s)
m.layers.append(lyr)
m.zoom_all()
#mapnik.render_to_file(m,'test.png')
grid = mapnik.Grid(m.width,m.height,key='__id__')
mapnik.render_layer(m,grid,layer=0,fields=['Name'])
utf1 = grid.encode()
eq_(utf1,line_expected,show_grids('line',utf1,line_expected))
point_expected = {"data": {"1": {"Name": "South East"}, "2": {"Name": "South West"}, "3": {"Name": "North West"}, "4": {"Name": "North East"}}, "grid": [" ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " !!!! #### ", " !!!! #### ", " !!!! #### ", " !!!! #### ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " $$$$ %%%% ", " $$$$ %%%% ", " $$$$ %%%% ", " $$$$ %%%% ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " "], "keys": ["", "3", "4", "2", "1"]}
def test_point_symbolizer_grid():
width,height = 256,256
sym = mapnik.PointSymbolizer(mapnik.PathExpression('../data/images/dummy.png'))
m = create_grid_map(width,height,sym)
ul_lonlat = mapnik.Coord(142.30,-38.20)
lr_lonlat = mapnik.Coord(143.40,-38.80)
m.zoom_to_box(mapnik.Box2d(ul_lonlat,lr_lonlat))
grid = mapnik.Grid(m.width,m.height)
mapnik.render_layer(m,grid,layer=0,fields=['Name'])
utf1 = grid.encode()
eq_(utf1,point_expected,show_grids('point-sym',utf1,point_expected))
# should throw because this is a mis-usage
# https://github.com/mapnik/mapnik/issues/1325
@raises(RuntimeError)
def test_render_to_grid_multiple_times():
# create map with two layers
m = mapnik.Map(256,256)
s = mapnik.Style()
r = mapnik.Rule()
sym = mapnik.MarkersSymbolizer()
sym.allow_overlap = True
r.symbols.append(sym)
s.rules.append(r)
m.append_style('points',s)
# NOTE: we use a csv datasource here
# because the memorydatasource fails silently for
# queries requesting fields that do not exist in the datasource
ds1 = mapnik.Datasource(**{"type":"csv","inline":'''
wkt,Name
"POINT (143.10 -38.60)",South East'''})
lyr1 = mapnik.Layer('One')
lyr1.datasource = ds1
lyr1.styles.append('points')
m.layers.append(lyr1)
ds2 = mapnik.Datasource(**{"type":"csv","inline":'''
wkt,Value
"POINT (142.48 -38.60)",South West'''})
lyr2 = mapnik.Layer('Two')
lyr2.datasource = ds2
lyr2.styles.append('points')
m.layers.append(lyr2)
ul_lonlat = mapnik.Coord(142.30,-38.20)
lr_lonlat = mapnik.Coord(143.40,-38.80)
m.zoom_to_box(mapnik.Box2d(ul_lonlat,lr_lonlat))
grid = mapnik.Grid(m.width,m.height)
mapnik.render_layer(m,grid,layer=0,fields=['Name'])
# should throw right here since Name will be a property now on the `grid` object
# and it is not found on the second layer
mapnik.render_layer(m,grid,layer=1,fields=['Value'])
utf1 = grid.encode()
if __name__ == "__main__":
setup()
run_all(eval(x) for x in dir() if x.startswith("test_"))
|
