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better formulae

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Motiejus Jakštys 2021-04-30 14:30:12 +03:00
parent b680ba630d
commit 10d55c4a5b
4 changed files with 17 additions and 11 deletions
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2
IV/Makefile
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@ -70,7 +70,7 @@ slides: $(SLIDES)
mj-msc.pdf: mj-msc.tex version.inc.tex vars.inc.tex bib.bib \ mj-msc.pdf: mj-msc.tex version.inc.tex vars.inc.tex bib.bib \
$(LISTINGS) $(addsuffix .pdf,$(FIGURES)) $(addsuffix .pdf,$(RIVERS)) $(LISTINGS) $(addsuffix .pdf,$(FIGURES)) $(addsuffix .pdf,$(RIVERS))
latexmk -shell-escape -g -pdf $< latexmk -shell-escape -pdf $<
############################ ############################
# Report's test dependencies # Report's test dependencies

1
IV/layer2img.py
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@ -63,7 +63,6 @@ def read_layer(select, width, maybe_quadrant):
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)
print(sql)
return geopandas.read_postgis(sql, con=conn, geom_col='way1') return geopandas.read_postgis(sql, con=conn, geom_col='way1')

16
IV/mj-msc.tex
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@ -729,21 +729,23 @@ compactness index is calculated as follows:
\item Construct a polygon by joining first and last vertices of the bend. \item Construct a polygon by joining first and last vertices of the bend.
\item Calculate area of the polygon. \item Calculate area of the polygon $A_p$.
\item Calculate perimeter $u$ of the polygon. The same value is the \item Calculate perimeter $P$ of the polygon. The same value is the
circumference of the circle. circumference of the circle: $C = P$.
\item Given circle's perimeter $u$, circle's area $A$ is: \item Given circle's circumference $C$, circle's area $A_c$ is:
\[ \[
A = \frac{u^2}{4\pi} A_{c} = \frac{C^2}{4\pi}
\] \]
\item Compactness index is $\nicefrac{P}{A}$: \item Compactness index is $\frac{A_p}{A_c}$:
\[ \[
cmp = \frac{P}{A} = \frac{P}{ \frac{u^2}{4\pi} } = \frac{4\pi P}{u^2} cmp = \frac{A_p}{A_c} =
\frac{A_p}{ \frac{C^2}{4\pi} } =
\frac{4\pi A_p}{C^2}
\] \]
\end{enumerate} \end{enumerate}

9
IV/wm.sql
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@ -411,8 +411,8 @@ create function isolated_bends(
dbgname text default null dbgname text default null
) as $$ ) as $$
declare declare
-- if neighbor's curvatures are within, it's isolated -- if neighbor's curvatures are within this fraction of the current bend
isolation_threshold constant real default 0.25; isolation_threshold constant real default 0.5;
this real; this real;
skip_next bool; skip_next bool;
res t_bend_attrs; res t_bend_attrs;
@ -438,6 +438,11 @@ begin
i, i,
res.bend, res.bend,
jsonb_build_object( jsonb_build_object(
'area', res.area,
'cmp', res.cmp,
'adjsize', res.adjsize,
'baselinelength', res.baselinelength,
'curvature', res.curvature,
'isolated', res.isolated 'isolated', res.isolated
) )
); );