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add visvalingam.sql

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Motiejus Jakštys 2020-05-25 15:03:00 +03:00
parent 93e5cca05d
commit ba66799829
3 changed files with 16 additions and 2 deletions
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2
II/Referatas/Makefile
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@ -15,7 +15,7 @@ db/.faux_$(1)-$(2): $(1).sql db/.faux_ready
touch db/.faux_$(1)-$(2)
$(1)-$(2).pdf: layer2img.py db/.faux_$(1)-$(2)
./layer2img.py --table=$(1)_$(2) --size=74x52 --outfile $(1)-$(2).pdf
./layer2img.py --table=$(1)_$(2) --size=52x74 --outfile $(1)-$(2).pdf
endef
$(foreach t,$(TOLERANCES),$(eval $(call algo2img,douglas,$(t))))

2
II/Referatas/mj-referatas.tex
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@ -143,7 +143,7 @@ As one can observe in figure~\ref{fig:douglas-300}, the Douglas \& Peucker with
Douglas \& Peucker &
Visvalingam-Whyatt \tabularnewline \hline
\center 0 &
Original &
\multicolumn{2}{ | l | }{
\includegraphics[width=.84\columnwidth]{douglas-0}
} \tabularnewline \hline

14
II/Referatas/visvalingam.sql Normal file
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@ -0,0 +1,14 @@
DROP TABLE IF EXISTS visvalingam_:tolerance;
CREATE TABLE visvalingam_:tolerance (
fid serial NOT NULL,
geom geometry(MULTILINESTRING, 3346)
);
INSERT INTO visvalingam_:tolerance (geom) (
SELECT
ST_SimplifyVW (ST_LineMerge (ST_Union (geom)),
:tolerance * :tolerance) AS geoms
FROM
zeimena);