% !TeX root = mercatormap.tex
% !TeX encoding=UTF-8
% !TeX spellcheck=en_US
% include file of mercatormap.tex (manual of the LaTeX package mercatormap)
\clearpage
\section{Examples}\label{sec:examples}%

The following map examples may be used as tutorials and
starting point for own applications.
Also see |mercatormap-example.tex| for a compilable full example.
Note to do all preparations documented in \Fullref{sec:python}.


%-------------------------------------------------------------------------------
\subsection{Reference Position}

With \refKey{mermap/supply/type}|=|\docValue{reference} a map with a
\emph{reference position} is constructed. Here, Munich is taken as
reference position and center of the map. Since the position is used
more than once, it is stored with \refCom{mrcNPdef} for further reference.
With \refKey{mermap/supply/flex reference scale} the scale
is set to 1:6\,000\,000. For the background map tiles, a
\refKey{mermap/supply/source} is selected for download.
This setup is done by \refCom{mrcmap} while \refCom{mrcdrawmap} draws
the downloaded map tiles.

\tikzsetnextfilename{examples_reference}%
\begin{dispExample*}{center lower, breakable}
\begin{tikzpicture}
  \sffamily
  \mrcNPdef{munich}{48.137222}{11.575556}
  \mrcNPdef{vienna}{48.208333}{16.373056}
  \mrcNPdef{cologne}{50.938056}{6.956944}
  \mrcNPdef{milano}{45.4625}{9.186389}
  \mrcmap[type=reference,
    named position=munich,
    flex reference scale=6 000 000,
    source=topplusopen web,
    tex width=14cm,
    tex height=14cm]{examples_reference}
  \path[draw=yellow!50!gray,fill=yellow!20]
    ([xshift=-2mm,yshift=-5mm]mrcmap.south west) rectangle
    ([xshift=2mm,yshift=15mm]mrcmap.north east);
  \mrcdrawmap
  \node[below,font=\fontsize{7pt}{7pt}\sffamily] at (mrcmap.south)
    {\mrcmapattribution};
  \path[draw=yellow!50!gray] (mrcmap.south west) rectangle (mrcmap.north east);

  \mrcNPdraworthodrome[red,very thick]{munich}{milano}
  \path[blue,very thick] (\mrcNPcs{munich}) --
    node[red,fill=white,sloped,below] {\mrcNPprettyloxodistance{munich}{milano}}
    (\mrcNPcs{milano});

  \mermapsetmarker{type=pin, draw=red, fill=red!10, font=\sffamily\small}
  \mrcmarker{named position=munich,  contents={M\"unchen}}
  \mrcmarker{named position=vienna,  contents={Wien}}
  \mrcmarker{named position=cologne, contents={K\"oln}}
  \mrcmarker{named position=milano,  contents={Milano}}

  \node[above left=5mm,font=\Large\bfseries] at (mrcmap.north east) {Munich};

  \node[above right] at ([yshift=10mm]mrcmap.north west)
    {Scale \mrcprettymapscale};

  \mrcdrawscalebar[width-in-km=300,partitions=6,north-west-outside=0mm;5mm,
    single, height=1mm, major style={yellow!50!gray!50!black}]
  \path[every node/.style={above,inner sep=0.5mm,font=\sffamily\tiny}]
    (mrcscalebar.north west) -- (mrcscalebar.north east)
    node[pos=0]{0} node[pos=0.3333]{100} node[pos=0.6667]{200}
    node[pos=1]{300\,km};

  \mrcdrawscalebar[width-in-mile=200,partitions=8,
    at={(mrcscalebar.south west)},placement=below right,
    single, height=1mm, major style={yellow!50!gray!50!black}]
  \path[every node/.style={below,inner sep=0.5mm,font=\sffamily\tiny}]
    (mrcscalebar.south west) -- (mrcscalebar.south east)
    node[pos=0]{0} node[pos=0.25]{50} node[pos=0.5]{100} node[pos=0.75]{150}
    node[pos=1]{200\,miles};
\end{tikzpicture}
\end{dispExample*}


\clearpage
%-------------------------------------------------------------------------------
\subsection{Fitting Area}

With \refKey{mermap/supply/type}|=|\docValue{areafit} a map is constructed
where a given area is fitted in. The following example lists some
US-American cities and constructs an \refKey{mermap/supply/area} which
contains all of them. With \refKey{mermap/supply/flex area fit}|=15mm| a
border region is added.


\tikzsetnextfilename{examples_fitting_area}%
\begin{dispExample*}{center lower}
\begin{tikzpicture}
  \mrcNPdef{honolulu}{21.305225}{-157.867}
  \mrcNPdef{fairbanks}{64.8379435}{-147.7192214}
  \mrcNPdef{sandiego}{32.7146781}{-117.1640995}
  \mrcNPdef{miami}{25.7599333}{-80.1951257}
  \mrcNPdef{boston}{42.359744}{-71.061322}
  \mrcNPdef{denver}{39.7372435}{-104.997378}
  \mrcmap[type=areafit,
    area={honolulu,fairbanks,sandiego,miami,boston,denver},
    source=topplusopen web,
    tex width=15cm, tex height=11cm,
    flex area fit=15mm,
    ]{examples_fitting_area}
  \mrcdrawmap \mrcdrawnetwork
  \node[below,font=\fontsize{7pt}{7pt}\sffamily] at (mrcmap.south)
    {\mrcmapattribution};
  \node[below left,fill=white,opacity=0.8,text opacity=1] at (mrcmap.north east)
    {Scale \mrcprettymapscale};
  \path[draw] (mrcmap.south west) rectangle (mrcmap.north east);
  \foreach \city in {honolulu,fairbanks,sandiego,miami,boston,denver}
    {\mrcmarker{type=ringx, draw=red, fill=red!20, named position=\city}}
\end{tikzpicture}
\end{dispExample*}


\clearpage
%-------------------------------------------------------------------------------
\subsection{Fixed Boundaries}

With \refKey{mermap/supply/type}|=|\docValue{boundaries} a map is constructed
with fixed boundaries. In contrast to the other map types, the document
map size cannot be given directly but derives from the map setup. This bears
the risk of too large maps. The following example is a map with exact
boundaries \mrcformlat{-45} to \mrcformlat{-10}
and \mrcformlon{110} to \mrcformlon{155}. A decent \refKey{mermap/supply/zoom}
is 5 (every zoom step doubles the map size in each direction).

\tikzsetnextfilename{examples_boundaries}%
\begin{dispExample*}{center lower,breakable}
% \mrcsetapikey{thunderforest}{YOUR-API-KEY}  % registered key
\begin{tikzpicture}
  \mrcmap[type=boundaries,
    west=110,east=155,south=-45,north=-10,
    zoom=5,
    source=thunderforest outdoors,
    ]{examples_boundaries}
  \mrcdrawmap
  \node[below,font=\fontsize{7pt}{7pt}\sffamily] at (mrcmap.south)
    {\mrcmapattribution};
  \mrcdrawnetwork
  \mrcdrawscalebar[width-in-km=1000,partitions=4,south-west-inside=5mm,
    major style={blue!50!gray!50!black}]
  \path[every node/.style={below,inner sep=0.5mm,font=\sffamily\tiny}]
    (mrcscalebar.south west) -- (mrcscalebar.south east)
    node[pos=0]{0} node[pos=0.5]{500}
    node[pos=1]{1000} node[pos=1,right,yshift=1mm]{km};
  \mrcmarker{lat=-35.3,lon=149.116667,type=pictodropring,
    draw=red,fill=red!10}
\end{tikzpicture}
\end{dispExample*}


\clearpage
%-------------------------------------------------------------------------------
\subsection{Map Without Map Tiles}

There is no coercion to use downloaded map tiles, if they are not needed or
wanted. With \refKey{mermap/supply/target}|=none| no map tiles are downloaded.
The following example draws a rough polygon shape of Germany using
\refEnv{mrcroute*}.

\tikzsetnextfilename{examples_routemap}%
\begin{dispExample*}{center lower,breakable}
\begin{tikzpicture}
  \mrcNPdef{munich}{48.137222}{11.575556}
  \mrcNPdef{cologne}{50.938056}{6.956944}
  \mrcNPdef{hamburg}{53.550556}{9.993333}
  \mrcNPdef{berlin}{52.518611}{13.408333}
  \mrcmap[type=areafit,
    west=5,east=15,south=47,north=55,
    target=none,
    tex width=14cm, tex height=14cm,
    flex area fit=5mm
    ]{examples_routemap}
  \mrcclipmap
  \path[draw,fill=yellow!5] (mrcmap.south west) rectangle (mrcmap.north east);
  \begin{mrcroute*}[
      preaction={fill=black,opacity=.5,
          transform canvas={xshift=1mm,yshift=-1mm}},
      draw         = green!50!black,
      top color    = green!50!gray!5,
      bottom color = green!50!gray!15]
    \mrcpoint{47.57268069220318}{8.07968771809688}
    \mrcpoint{47.55206513030159}{8.458302263852103}
    \mrcpoint{47.60652271644701}{8.58564576447632}
    \mrcpoint{47.65002478441761}{8.475977737743394}
    \mrcpoint{47.8129149100372}{8.621611270810012}
    \mrcpoint{47.70405949548734}{8.824753417980977}
    \mrcpoint{47.57118357939037}{9.373387060586875}
    \mrcpoint{47.57763968687206}{9.783024034250792}
    \mrcpoint{47.46598581489455}{10.09335967295321}
    \mrcpoint{47.28014625489598}{10.22678291669482}
    \mrcpoint{47.32098723021947}{10.40092026792467}
    \mrcpoint{47.52413897927237}{10.53589647271817}
    \mrcpoint{47.5130331145614}{10.94403341747166}
    \mrcpoint{47.39097338968944}{11.04734763681045}
    \mrcpoint{47.42252867275465}{11.44170163808758}
    \mrcpoint{47.57832219946236}{11.64025530020549}
    \mrcpoint{47.65203740659043}{12.2451260343467}
    \mrcpoint{47.64005851006706}{12.78135708694006}
    \mrcpoint{47.42189293170733}{13.06242166895717}
    \mrcpoint{47.68727761120528}{13.13421507093485}
    \mrcpoint{47.70570852317097}{12.97737528172392}
    \mrcpoint{47.86836520373472}{12.94442906710615}
    \mrcpoint{48.06063312315187}{12.76937524145701}
    \mrcpoint{48.33220372303314}{13.38497370385176}
    \mrcpoint{48.57060635511297}{13.55281830406328}
    \mrcpoint{48.51465473490364}{13.78916086481733}
    \mrcpoint{48.74889509826911}{13.84448153318651}
    \mrcpoint{48.95974762545411}{13.50952525317658}
    \mrcpoint{49.37838143356481}{12.77000417129028}
    \mrcpoint{49.78495654813383}{12.44617209199484}
    \mrcpoint{49.93155217044134}{12.49159565814237}
    \mrcpoint{50.13144236663469}{12.24546848540114}
    \mrcpoint{50.28771270517358}{12.30810150664619}
    \mrcpoint{50.40989390494432}{12.94903619964524}
    \mrcpoint{50.65841629251407}{13.3075062965852}
    \mrcpoint{50.76329878585482}{13.97452403458363}
    \mrcpoint{51.02604511746936}{14.41278607347103}
    \mrcpoint{50.79185062876172}{14.80477069337384}
    \mrcpoint{51.15202957355457}{14.99270251686064}
    \mrcpoint{51.34128169635556}{15.02098384386006}
    \mrcpoint{51.53750266315752}{14.74120138252564}
    \mrcpoint{51.81924062442433}{14.62724686001225}
    \mrcpoint{52.11180711219343}{14.70514397703483}
    \mrcpoint{52.39266284958671}{14.60756306378661}
    \mrcpoint{52.60597277515545}{14.58725108586684}
    \mrcpoint{52.88134471470577}{14.16977248675916}
    \mrcpoint{53.14560306739344}{14.4215985570986}
    \mrcpoint{53.43447627332744}{14.39440456086107}
    \mrcpoint{53.76080228279986}{14.26477636730856}
    \mrcpoint{54.07894830697219}{13.84113247149844}
    \mrcpoint{54.34144910466647}{13.71477685386829}
    \mrcpoint{54.57879841452108}{13.41784866398943}
    \mrcpoint{54.38430816973541}{12.55218424463898}
    \mrcpoint{54.16285895583508}{12.11170524536321}
    \mrcpoint{54.11909611435144}{11.78253136604545}
    \mrcpoint{53.9629318241985}{11.23001765303107}
    \mrcpoint{54.02548042559235}{10.82100535035693}
    \mrcpoint{54.20942342601608}{11.17572026938692}
    \mrcpoint{54.42622022041155}{11.04601054827628}
    \mrcpoint{54.31534430886417}{10.73027571352005}
    \mrcpoint{54.4430955768925}{10.19233706975044}
    \mrcpoint{54.8317448735389}{10.00757468096804}
    \mrcpoint{54.87986478845961}{9.659528688958062}
    \mrcpoint{54.8308224503691}{9.271730840012292}
    \mrcpoint{54.92302453288877}{8.571394535898566}
    \mrcpoint{54.49119535498197}{8.900730234661252}
    \mrcpoint{54.34335254823343}{8.645116397508792}
    \mrcpoint{54.22420563732749}{8.880431477246834}
    \mrcpoint{53.87404422621243}{8.679945700393079}
    \mrcpoint{53.54658560722722}{8.286556227539295}
    \mrcpoint{53.7066272365128}{8.034813408953866}
    \mrcpoint{53.78031118673399}{7.387421106389351}
    \mrcpoint{53.51218238635882}{6.930006752473437}
    \mrcpoint{53.25894778199789}{7.171145313101468}
    \mrcpoint{52.64374200661974}{6.997019504055286}
    \mrcpoint{52.55662475372522}{6.719778263650637}
    \mrcpoint{52.38988292317155}{6.970320972580792}
    \mrcpoint{51.92299983362206}{6.742905287863996}
    \mrcpoint{51.88316670940459}{6.156741607019097}
    \mrcpoint{51.79567780329431}{5.98801954642294}
    \mrcpoint{51.43928428452571}{6.159613225461791}
    \mrcpoint{51.0215877919207}{5.887936542477828}
    \mrcpoint{50.79077378475993}{5.983374968822379}
    \mrcpoint{50.59470107381249}{6.228393825507839}
    \mrcpoint{50.33147032961352}{6.304617231833176}
    \mrcpoint{50.15747573005454}{6.092865298740861}
    \mrcpoint{49.97845765993797}{6.16527138749146}
    \mrcpoint{49.78369815200002}{6.535162836379246}
    \mrcpoint{49.45067080157749}{6.378063336429978}
    \mrcpoint{49.11701097547841}{6.794068795882435}
    \mrcpoint{49.14800972775451}{7.494253217695865}
    \mrcpoint{49.03198382192998}{7.640486837553122}
    \mrcpoint{48.92859396692077}{8.238456398546767}
    \mrcpoint{48.61606185482966}{7.832853167339047}
    \mrcpoint{48.05389084062409}{7.510556381211842}
    \mrcpoint{47.56795313962416}{7.588782160556193}
    \mrcpoint{47.57268069220318}{8.07968771809688}
  \end{mrcroute*}
  \foreach \city / \name in {munich/M\"unchen, cologne/K\"oln,
    hamburg/Hamburg, berlin/Berlin}
    {
      \mrcmarker{named position=\city,type=knob,fill=red!20,draw=red,
        radius=2mm}
      \mrcmarker{named position=\city,type=pin,fill=blue!10,draw=blue,
        contents=\name}
    }
\end{tikzpicture}
\end{dispExample*}


\clearpage
%-------------------------------------------------------------------------------
\subsection{Alignment of the Reference Position}

With \refKey{mermap/supply/align} the reference position can be aligned
at different map positions.

\tikzsetnextfilename{examples_alignment}%
\begin{dispExample*}{center lower}
\mrcNPdef{munich}{48.137222}{11.575556}
\foreach \a in {east,center,west,north} {
\begin{tikzpicture}
  \mrcmap[type=reference,
    named position=munich,
    flex reference scale=1 000 000,
    source=opentopomap,
    tex width=\linewidth,tex height=3cm,
    align=\a]{examples_alignment_\a}
  \mrcdrawmap
  \node[below,font=\fontsize{7pt}{7pt}\sffamily] at (mrcmap.south)
    {\mrcmapattribution};   \mrcclipmap
  \tikzset{every node/.style={fill=white,fill opacity=0.8,text opacity=1}}
  \path[draw] (mrcmap.south west) rectangle (mrcmap.north east);
  \ifmrcNPinvicinity{munich}{
    \fill[red] (mrcpos) circle (4pt) node[below] {M\"unchen};}{}
  \node[text=red,above left] at (mrcmap.south east) {align=\a};
\end{tikzpicture}
\par}
\end{dispExample*}



\clearpage
%-------------------------------------------------------------------------------
\subsection{Flexible Zoom}

Map tiles are only provided at fixed zoom levels with natural numbers,
but the package allows a \refKey{mermap/flex zoom} with rational numbers.
The flexible zoom is realized by combining a suitable fixed zoom with
an adapted document tile scaling, see \Fullref{sec:flexible_tile_size}.
The following example shows a more or less smooth zoom increase.
The same technique is used by all options starting with |flex|, e.g.
\refKey{mermap/supply/flex reference scale}
or \refKey{mermap/supply/flex area fit}
as seen in the examples before.

\tikzexternaldisable
\tikzsetnextfilename{examples_flex_zoom}%
\begin{dispExample*}{center lower,breakable}
% \mrcsetapikey{thunderforest}{YOUR-API-KEY}  % registered key
\mrcNPdef{munich}{48.137222}{11.575556}
\foreach \zz in {7.0,7.2,...,9.0} {
\edef\z{\fpeval{round(\zz,1)}}
\begin{tikzpicture}
  \mermapset{flex zoom=\z}
  \mrcmap[type=reference,
      named position=munich,
      source=thunderforest outdoors,
      tex width=\linewidth,
      tex height=3cm
    ]{examples_flex_zoom_\z}
  \mrcdrawmap
  \mrcclipmap
  \tikzset{every node/.style={fill=white,fill opacity=0.5,text opacity=1}}
  \node[above,font=\fontsize{7pt}{7pt}\sffamily] at (mrcmap.south)
      {\mrcmapattribution};
  \path[draw] (mrcmap.south west) rectangle (mrcmap.north east);
  \node[below left=2mm,align=right] at (mrcmap.north east)
    {flex zoom=\fpeval{round(\z,1)}\\ scale \mrcprettymapscale};
  \ifmrcNPinvicinity{munich}{
    \fill (mrcpos) circle (2pt) node[below] {M\"unchen};}{}
\end{tikzpicture}\par}
\end{dispExample*}



