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two sinewave variants

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Motiejus Jakštys 2020-05-27 13:53:51 +03:00
parent bd6e3647d5
commit bebe4cd3bf
2 changed files with 23 additions and 11 deletions
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16
II/Referatas/fig2layer.py
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@ -19,11 +19,18 @@ def write_file(args, geom):
def sinewave(args):
INTERVAL = 0.1
TAIL_LEN = 7
SINE_LEN = 7
if args.numwaves == 2:
TAIL_LEN, SINE_LEN = 7, 7
TAILS = np.zeros(int(TAIL_LEN / INTERVAL))
sin_range = np.arange(-pi/4, SINE_LEN, INTERVAL)
amplitude = (np.sin(sin_range * pi / 2) + 1)*2
sin_range = np.arange(-pi/4, SINE_LEN, INTERVAL) * pi / 2
amplitude = (np.sin(sin_range)+1)*2
else:
TAIL_LEN, SINE_LEN = 3.5, 3.5
TAILS = np.zeros(int(TAIL_LEN / INTERVAL))
sin_range = np.arange(-pi/4, SINE_LEN - pi/8, INTERVAL) * pi / 2
amplitude = np.sin(sin_range) + 1
y = np.concatenate([TAILS, amplitude, TAILS])
x = np.arange(-TAIL_LEN - pi/4, SINE_LEN + TAIL_LEN, INTERVAL)
lines = LineString(zip(x*10, y*10))
@ -47,6 +54,7 @@ def parse_args():
parser.add_argument('-o', '--outfile', metavar='<file>', required=True)
subparsers = parser.add_subparsers()
sine = subparsers.add_parser('sine', help='Sine wave')
sine.add_argument('--numwaves', choices=[1, 2], type=int, help='Number of waves')
sine.set_defaults(func=sinewave)
rect = subparsers.add_parser('rect', help='Rectangle')
rect.add_argument('--bounds', type=float, nargs=4, metavar=BOUNDS)

16
II/Referatas/mj-referatas.tex
View File

@ -239,7 +239,8 @@ Let's zoom in to the river crossing area for some of the algorithms; see
table~\ref{tab:comparison-crossing} on page~\pageref{tab:comparison-crossing}.
Both {\VW} and {\DP} simplify "blunt" bends (a "blunt" bent looks like a cutout
from a large circle, see figure~\ref{blunt-bent} on page~\pageref{blunt-bent}.
from a large circle, see figure~\ref{fig:blunt-bent} on
page~\pageref{fig:blunt-bent}.
\begin{figure}[h]
\centering
@ -287,18 +288,18 @@ of the least developed aspects of automatic line generalization, according to
\cite{miuller1995generalization}. {\WM} encoded this process to an algorithm.
Imagine there are two small bends close to each other, similar to
figure~\ref{pic:sinewave} on page~\pageref{pic:sinewave}, and one needs
to generalize it. The bends are too large to ignore replace them with a
straight line, but too small to retain both and retain their complexity.
figure~\ref{fig:sinewave} on page~\pageref{fig:sinewave}, and one needs to
generalize it. The bends are too large to ignore replace them with a straight
line, but too small to retain both and retain their complexity.
\begin{figure}[h]
\centering
\includegraphics[width=52mm]{sinewave}
\caption{Example river bend that should be generalized}
\label{pic:sinewave}
\label{fig:sinewave}
\end{figure}
When one applies {\DP} to figure~\ref{pic:sinewave}, either both bends remain,
When one applies {\DP} to figure~\ref{fig:sinewave}, either both bends remain,
or become a straight line, see table~\ref{tab:comparison-sinewave} on
page~\pageref{tab:comparison-sinewave}.
@ -330,6 +331,9 @@ page~\pageref{tab:comparison-sinewave}.
\label{tab:comparison-sinewave}
\end{figure}
Ideally, the double-bend in figure~\ref{fig:sinewave} should be normalized to a
larger single-bend, similar to figure~ on page~.
\section{Related Work and future suggestions}
\label{sec:related_work}