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Motiejus Jakštys 2021-05-19 22:57:52 +03:00 committed by Motiejus Jakštys
parent dc5554ede7
commit 0403bb3acc
2 changed files with 31 additions and 22 deletions

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@ -182,7 +182,6 @@ $(eval $(call wm_vwdp50kblack,wm75,,grpk10,1))
$(eval $(call wm_vwdp50kblack,wm75,,grpk10,1,tr))
$(eval $(call wm_vwdp50kblack,wm75,,grpk10,1,tl))
salvis-25k_1SELECT = wm_visuals where name='salvis-grpk10'
salvis-25k_WIDTHDIV = 1

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@ -1392,21 +1392,21 @@ Our generalized results are viewed from the following angles:
\subsubsection{Medium-scale (1:\numprint{50000})}
\label{sec:analyzed-medium-scale}
\begin{figure}[h!]
\begin{figure}[h]
\centering
\includegraphics[width=\textwidth]{salvis-wm75--grpk10-1x50k}
\caption{2x zoomed-in {\WM} for 1:\numprint{50000}.}
\label{fig:salvis-wm75--grpk10-1x50k}
\end{figure}
\begin{figure}[h!]
\begin{figure}[h]
\centering
\includegraphics[width=\textwidth]{salvis-wm75--grpk10-1x50ktl}
\caption{Left part of Figure~\ref{fig:salvis-wm75--grpk10-1x50k}.}
\label{fig:salvis-wm75--grpk10-1x50ktl}
\end{figure}
\begin{figure}[h!]
\begin{figure}[h]
\centering
\includegraphics[width=\textwidth]{salvis-wm75--grpk10-1x50ktr}
\caption{Top--right part of Figure~\ref{fig:salvis-wm75--grpk10-1x50k}.}
@ -1429,6 +1429,8 @@ simplification in the next section.
To sum up, mid-scale simplification works well for some geometries, but creates
sharp edges for others.
\clearpage
\subsubsection{Large-scale (1:\numprint{250000})}
\label{sec:analyzed-large-scale}
@ -1450,7 +1452,7 @@ simplification and overlays the original.
\includegraphics[width=.2\textwidth]{salvis-wm220-10x}
\caption{Simplified.}
\end{subfigure}
\caption{GDB10LT simplified with {\WM} for 1:\numprint{250000}.}
\caption{GRPK10 simplified with {\WM} for 1:\numprint{250000}.}
\label{fig:salvis-wm220-10x}
\end{figure}
@ -1465,6 +1467,8 @@ A conglomeration of bends is visible, especially in top--right side of the
illustration. We assume this was caused by two bends significantly exaggerated,
leaving no space to exaggerate for those between the two.
\clearpage
\subsubsection{Discussion}
For mid-size scales of 1:\numprint{50000}, the implemented algorithm works well
@ -1487,13 +1491,13 @@ future research and improvement:
\subsubsection{Background}
There are a few datasets used in this comparison: GDB10LT, GRPK50 and
There are a few datasets used in this comparison: GRPK10, GRPK50 and
GRPK250. They are vector datasets, which include rivers. They can be
downloaded for free from \cite{nzt}. Here are the meanings of the codenames:
\begin{description}
\item[GDB10LT] is dataset of highest detail. Suited for maps of scale
\item[GRPK10] is dataset of highest detail. Suited for maps of scale
1:\numprint{10000}.
\item[GRPK50] is suited for maps of scale 1:\numprint{50000}.
@ -1503,17 +1507,19 @@ downloaded for free from \cite{nzt}. Here are the meanings of the codenames:
\end{description}
During the analysis, we ran {\WM} on GDB10LT for 2 destination scales:
1:\numprint{50000} and 1:\numprint{250000}.\footnote{parameter calculation is
detailed in section~\ref{sec:bend-scaling-and-dimensions}.} This section
compares the resulting {\WM}--generalized rivers to GRPK50 and GRPK250.
During the analysis, we ran {\WM} on GRPK10 for 2 destination scales:
1:\numprint{50000} and 1:\numprint{250000}.\footnote{How parameters are
calculated is detailed in section~\ref{sec:bend-scaling-and-dimensions}.} This
section compares the resulting {\WM}--generalized rivers to GRPK50 and GRPK250.
\clearpage
\subsubsection{Medium-scale (1:\numprint{50000})}
For our research location, the national dataset GDB10LT is almost equivalent to
For our research location, the national dataset GRPK10 is almost equivalent to
GRPK50, with a few nuances. Figure~\ref{fig:salvis-wm75-grpk50-grpk10-1x50k}
illustrates all three shapes: GRPK50, {\WM}--simplified GDB10LT, and the
original GDB10LT.
illustrates all three shapes: GRPK50, {\WM}--simplified GRPK10, and the
original GRPK10.
\begin{figure}[h!]
\centering
@ -1536,6 +1542,8 @@ Figure~\ref{fig:salvis-wm75-grpk50-grpk10-1x50ktr} illustrates two small bends
that have been removed in GRPK50, but have been exaggerated by our
implementation.
\clearpage
\subsubsection{Large-scale (1:\numprint{250000})}
\label{sec:national-large-scale}
@ -1557,13 +1565,12 @@ desired in section~\ref{sec:future-suggestions}.
\begin{subfigure}[b]{.49\textwidth}
\centering
\includegraphics[width=\textwidth]{salvis-wm220}
\caption{{\WM}-simplified GDB10LT.}
\caption{{\WM}-simplified GRPK10.}
\end{subfigure}
\caption{GRPK250 and {\WM}--simplified GDB10LT.}
\caption{GRPK250 and {\WM}--simplified GRPK10.}
\label{fig:salvis-wm220}
\end{figure}
\subsection{Comparison with {\DP} and {\VW}}
It is time to visually compare our implementation with the classical
@ -1573,30 +1580,31 @@ in this section to 1:\numprint{50000}.
\begin{figure}[h!]
\includegraphics[width=\textwidth]{salvis-wm75-dp64-grpk10-1x50k}
\caption{}
\label{fig:salvis-wm75-dp64-grpk10-1x50k}
\end{figure}
\begin{figure}[h!]
\includegraphics[width=\textwidth]{salvis-wm75-dpchaikin64-grpk10-1x50k}
\caption{}
\label{fig:salvis-wm75-dpchaikin64-grpk10-1x50k}
\end{figure}
\clearpage
\begin{figure}[h!]
\includegraphics[width=\textwidth]{salvis-wm75-vw64-grpk10-1x50k}
\caption{}
\label{fig:salvis-wm75-vw64-grpk10-1x50k}
\end{figure}
\begin{figure}[h!]
\includegraphics[width=\textwidth]{salvis-wm75-vwchaikin64-grpk10-1x50k}
\caption{}
\label{fig:salvis-wm75-vwchaikin64-grpk10-1x50k}
\end{figure}
\clearpage
\subsection{Testing Results Online}
\label{sec:testing-results-online}
@ -1624,6 +1632,8 @@ produces poorly simplified results for some geometries.
\label{fig:openmap-wm-bad}
\end{figure}
\clearpage
\section{Conclusions}
\label{sec:conclusions}