commit 1ba8e2695745d00352f400c6cab17fd058250bc2 (tree)
parent 538557f9a1031829e299643ae396a40d706d9dcf
Author: Motiejus Jakštys <desired.mta@gmail.com>
Date: Tue, 26 May 2020 15:54:16 +0300
add clipping
Diffstat:
3 files changed, 34 insertions(+), 6 deletions(-)
diff --git a/II/Referatas/layer2img.py b/II/Referatas/layer2img.py
@@ -29,9 +29,23 @@ def parse_args():
parser.add_argument('-o', '--outfile', metavar='<file>', type=str)
parser.add_argument(
'--size', type=plt_size, help='Figure size in mm (WWxHH)')
+ parser.add_argument(
+ '--clip', type=float, nargs=4,
+ metavar=('xmin', 'ymin', 'xmax', 'ymax'))
return parser.parse_args()
+#def makebox(t):
+# xmin, ymin, xmax, ymax = t
+# if xmin > xmax:
+# raise Exception("xmin should be > xmax")
+# if ymin > ymax:
+# raise Exception("ymin should be > ymax")
+# left, bottom = xmin, ymin
+# width, height = xmax - xmin, ymax - ymin
+# return {'left': left, 'bottom': bottom, 'width': width, 'height': height}
+
+
def main():
args = parse_args()
if args.table:
@@ -41,8 +55,12 @@ def main():
else:
f = geopandas.read_file(args.infile)
f.plot(figsize=args.size)
- plt.axis('off')
- plt.margins(0, 0)
+ ax = plt.gca()
+ if args.clip:
+ ax.set_ylim(bottom=args.clip[1], top=args.clip[3])
+ ax.set_xlim(left=args.clip[0], right=args.clip[2])
+ ax.axis('off')
+ ax.margins(0, 0)
plt.tight_layout(0)
if args.outfile:
plt.savefig(args.outfile, bbox_inches=0, dpi=300)
diff --git a/II/Referatas/mj-referatas.tex b/II/Referatas/mj-referatas.tex
@@ -46,6 +46,12 @@ a6: 105x148xmm
a7: 74x105mm
a8: 52x74mm
+Xmin: 623306.313
+Ymin: 6109635.515
+Xmax: 625526.313
+Ymax: 6111210.515
+623306.313 6109635.515 625526.313 6111210.515
+
connect rivers first to a single polylines:
- some algs can preserve connectivity, some not.
@@ -136,14 +142,18 @@ are often used for line generalization:
Review of the available algorithms will be followed by desiderata for a
possible open-source addition. In the end, we will issue a recommendation,
-which algorithm can be picked up and implemented by a willing GIS developer.
+which algorithm can be picked up and implemented by an avid GIS developer.
\section{Visual comparison}
Lakaja and large part of Žeimena (see figure~\ref{fig:zeimena} on
-page~\pageref{fig:zeimena}) will be used, because the river exhibits both both
-straight and curved shape, is a combination of two curly rivers, and author's
-familiarity with the location.
+page~\pageref{fig:zeimena}) will be used as inputs to the generalization
+algorithms, because the river exhibits both both straight and curved shape, is
+a combination of two curly rivers, and author's familiarity with the location.
+
+Since the map area is large (scale $1:150 000$), we will also review a
+zoomed-in subset of the map of scale $1:10 000$. The zoomed-in version will
+help explain some of the deficiencies in the reviewed algorithms.
\begin{figure}[H]
\centering
diff --git a/II/Referatas/zeimena.gpkg b/II/Referatas/zeimena.gpkg
Binary files differ.
