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de-confuse inches and centimeters

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Motiejus Jakštys 2021-05-19 22:57:48 +03:00 committed by Motiejus Jakštys
parent 86a38548c9
commit bdd8062a4e
1 changed files with 6 additions and 7 deletions
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13
layer2img.py
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@ -10,14 +10,11 @@ from matplotlib import rc
CMAP = 'tab20c' CMAP = 'tab20c'
BOUNDS = ('xmin', 'ymin', 'xmax', 'ymax') BOUNDS = ('xmin', 'ymin', 'xmax', 'ymax')
INCH_MM = 25.4
INCH_CM = INCH_MM / 10
BLACK, GREEN, ORANGE, PURPLE = '#000000', '#1b9e77', '#d95f02', '#7570b3' BLACK, GREEN, ORANGE, PURPLE = '#000000', '#1b9e77', '#d95f02', '#7570b3'
PSQL_CREDS = "host=127.0.0.1 dbname=osm user=osm password=osm" PSQL_CREDS = "host=127.0.0.1 dbname=osm user=osm password=osm"
# see `NOTICE` in the LaTeX document; this is the width of the main text block. # see `NOTICE` in the LaTeX document; this is the width of the main text block.
TEXTWIDTH_CM = 12.12364 TEXTWIDTH_CM = 12.12364
TEXTWIDTH_INCH = TEXTWIDTH_CM * 10 / INCH_MM
SCALES = { SCALES = {
"GDR10": 10000, "GDR10": 10000,
@ -25,6 +22,8 @@ SCALES = {
"GDR250": 250000, "GDR250": 250000,
} }
def inch(cm):
return cm / 2.54
def wm_clip(string): def wm_clip(string):
if not string: if not string:
@ -62,7 +61,7 @@ def parse_args():
return parser.parse_args() return parser.parse_args()
def read_layer(select, width_in, maybe_wmclip): def read_layer(select, width, maybe_wmclip):
if not select: if not select:
return return
way = "way" way = "way"
@ -71,7 +70,7 @@ def read_layer(select, width_in, maybe_wmclip):
way = "st_intersection(way, wm_bbox('{name}', {scale}, {width}))".format( way = "st_intersection(way, wm_bbox('{name}', {scale}, {width}))".format(
name=name, name=name,
scale=scale, scale=scale,
width=width_in * INCH_CM, width=width,
) )
conn = psycopg2.connect(PSQL_CREDS) conn = psycopg2.connect(PSQL_CREDS)
sql = "SELECT {way} as way1 FROM {select}".format(way=way, select=select) sql = "SELECT {way} as way1 FROM {select}".format(way=way, select=select)
@ -92,7 +91,7 @@ def plot_args(color, maybe_cmap, maybe_linestyle):
def main(): def main():
args = parse_args() args = parse_args()
width = TEXTWIDTH_INCH / args.widthdiv width = TEXTWIDTH_CM / args.widthdiv
group1 = read_layer(args.group1_select, width, args.wmclip) group1 = read_layer(args.group1_select, width, args.wmclip)
group2 = read_layer(args.group2_select, width, args.wmclip) group2 = read_layer(args.group2_select, width, args.wmclip)
group3 = read_layer(args.group3_select, width, args.wmclip) group3 = read_layer(args.group3_select, width, args.wmclip)
@ -102,7 +101,7 @@ def main():
rc('text', usetex=True) rc('text', usetex=True)
fig, ax = plt.subplots() fig, ax = plt.subplots()
fig.set_figwidth(width) fig.set_figwidth(inch(width))
group1 is not None and group1.plot(ax=ax, **c1) group1 is not None and group1.plot(ax=ax, **c1)
group2 is not None and group2.plot(ax=ax, **c2) group2 is not None and group2.plot(ax=ax, **c2)