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@ -182,7 +182,6 @@ $(eval $(call wm_vwdp50kblack,wm75,,grpk10,1))
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$(eval $(call wm_vwdp50kblack,wm75,,grpk10,1,tr))
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$(eval $(call wm_vwdp50kblack,wm75,,grpk10,1,tl))
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salvis-25k_1SELECT = wm_visuals where name='salvis-grpk10'
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salvis-25k_WIDTHDIV = 1
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@ -1392,21 +1392,21 @@ Our generalized results are viewed from the following angles:
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\subsubsection{Medium-scale (1:\numprint{50000})}
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\label{sec:analyzed-medium-scale}
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\begin{figure}[h!]
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\begin{figure}[h]
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\centering
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\includegraphics[width=\textwidth]{salvis-wm75--grpk10-1x50k}
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\caption{2x zoomed-in {\WM} for 1:\numprint{50000}.}
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\label{fig:salvis-wm75--grpk10-1x50k}
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\end{figure}
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\begin{figure}[h!]
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\begin{figure}[h]
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\centering
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\includegraphics[width=\textwidth]{salvis-wm75--grpk10-1x50ktl}
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\caption{Left part of Figure~\ref{fig:salvis-wm75--grpk10-1x50k}.}
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\label{fig:salvis-wm75--grpk10-1x50ktl}
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\end{figure}
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\begin{figure}[h!]
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\begin{figure}[h]
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\centering
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\includegraphics[width=\textwidth]{salvis-wm75--grpk10-1x50ktr}
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\caption{Top--right part of Figure~\ref{fig:salvis-wm75--grpk10-1x50k}.}
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@ -1429,6 +1429,8 @@ simplification in the next section.
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To sum up, mid-scale simplification works well for some geometries, but creates
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sharp edges for others.
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\clearpage
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\subsubsection{Large-scale (1:\numprint{250000})}
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\label{sec:analyzed-large-scale}
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@ -1450,7 +1452,7 @@ simplification and overlays the original.
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\includegraphics[width=.2\textwidth]{salvis-wm220-10x}
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\caption{Simplified.}
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\end{subfigure}
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\caption{GDB10LT simplified with {\WM} for 1:\numprint{250000}.}
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\caption{GRPK10 simplified with {\WM} for 1:\numprint{250000}.}
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\label{fig:salvis-wm220-10x}
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\end{figure}
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@ -1465,6 +1467,8 @@ A conglomeration of bends is visible, especially in top--right side of the
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illustration. We assume this was caused by two bends significantly exaggerated,
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leaving no space to exaggerate for those between the two.
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\clearpage
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\subsubsection{Discussion}
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For mid-size scales of 1:\numprint{50000}, the implemented algorithm works well
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@ -1487,13 +1491,13 @@ future research and improvement:
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\subsubsection{Background}
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There are a few datasets used in this comparison: GDB10LT, GRPK50 and
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There are a few datasets used in this comparison: GRPK10, GRPK50 and
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GRPK250. They are vector datasets, which include rivers. They can be
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downloaded for free from \cite{nzt}. Here are the meanings of the codenames:
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\begin{description}
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\item[GDB10LT] is dataset of highest detail. Suited for maps of scale
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\item[GRPK10] is dataset of highest detail. Suited for maps of scale
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1:\numprint{10000}.
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\item[GRPK50] is suited for maps of scale 1:\numprint{50000}.
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@ -1503,17 +1507,19 @@ downloaded for free from \cite{nzt}. Here are the meanings of the codenames:
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\end{description}
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During the analysis, we ran {\WM} on GDB10LT for 2 destination scales:
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1:\numprint{50000} and 1:\numprint{250000}.\footnote{parameter calculation is
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detailed in section~\ref{sec:bend-scaling-and-dimensions}.} This section
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compares the resulting {\WM}--generalized rivers to GRPK50 and GRPK250.
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During the analysis, we ran {\WM} on GRPK10 for 2 destination scales:
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1:\numprint{50000} and 1:\numprint{250000}.\footnote{How parameters are
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calculated is detailed in section~\ref{sec:bend-scaling-and-dimensions}.} This
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section compares the resulting {\WM}--generalized rivers to GRPK50 and GRPK250.
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\clearpage
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\subsubsection{Medium-scale (1:\numprint{50000})}
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For our research location, the national dataset GDB10LT is almost equivalent to
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For our research location, the national dataset GRPK10 is almost equivalent to
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GRPK50, with a few nuances. Figure~\ref{fig:salvis-wm75-grpk50-grpk10-1x50k}
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illustrates all three shapes: GRPK50, {\WM}--simplified GDB10LT, and the
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original GDB10LT.
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illustrates all three shapes: GRPK50, {\WM}--simplified GRPK10, and the
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original GRPK10.
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\begin{figure}[h!]
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\centering
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@ -1536,6 +1542,8 @@ Figure~\ref{fig:salvis-wm75-grpk50-grpk10-1x50ktr} illustrates two small bends
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that have been removed in GRPK50, but have been exaggerated by our
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implementation.
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\clearpage
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\subsubsection{Large-scale (1:\numprint{250000})}
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\label{sec:national-large-scale}
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@ -1557,13 +1565,12 @@ desired in section~\ref{sec:future-suggestions}.
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\begin{subfigure}[b]{.49\textwidth}
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\centering
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\includegraphics[width=\textwidth]{salvis-wm220}
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\caption{{\WM}-simplified GDB10LT.}
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\caption{{\WM}-simplified GRPK10.}
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\end{subfigure}
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\caption{GRPK250 and {\WM}--simplified GDB10LT.}
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\caption{GRPK250 and {\WM}--simplified GRPK10.}
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\label{fig:salvis-wm220}
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\end{figure}
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\subsection{Comparison with {\DP} and {\VW}}
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It is time to visually compare our implementation with the classical
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@ -1573,30 +1580,31 @@ in this section to 1:\numprint{50000}.
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\begin{figure}[h!]
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\includegraphics[width=\textwidth]{salvis-wm75-dp64-grpk10-1x50k}
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\caption{}
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\label{fig:salvis-wm75-dp64-grpk10-1x50k}
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\end{figure}
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\begin{figure}[h!]
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\includegraphics[width=\textwidth]{salvis-wm75-dpchaikin64-grpk10-1x50k}
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\caption{}
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\label{fig:salvis-wm75-dpchaikin64-grpk10-1x50k}
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\end{figure}
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\clearpage
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\begin{figure}[h!]
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\includegraphics[width=\textwidth]{salvis-wm75-vw64-grpk10-1x50k}
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\caption{}
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\label{fig:salvis-wm75-vw64-grpk10-1x50k}
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\end{figure}
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\begin{figure}[h!]
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\includegraphics[width=\textwidth]{salvis-wm75-vwchaikin64-grpk10-1x50k}
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\caption{}
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\label{fig:salvis-wm75-vwchaikin64-grpk10-1x50k}
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\end{figure}
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\clearpage
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\subsection{Testing Results Online}
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\label{sec:testing-results-online}
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@ -1624,6 +1632,8 @@ produces poorly simplified results for some geometries.
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\label{fig:openmap-wm-bad}
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\end{figure}
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\clearpage
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\section{Conclusions}
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\label{sec:conclusions}
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