Changes

< Context provides a charts module to create flow charts. The details are in the [[MetaFun]], [[Graphicsmanual:mchart.pdf|Charts uncovered]]manual by Pragma.

see For example <context source="yes">\usemodule[httpchart]\setupFLOWcharts[height=3\lineheight] \startFLOWchart[example]\startFLOWcell \name {flow} \location {1,1} \text {Flow} \connection [rl] {chart}\stopFLOWcell\startFLOWcell \name {chart} \location{2,1} \text {Charts}\stopFLOWcell\stopFLOWchart\FLOWchart[example]</context> The more sophisticated example: <context source="yes">\usemodule[chart] \setupFLOWcharts[nx=5,ny=3,dx=2\bodyfontsize,dy=2\bodyfontsize,maxwidth=\textwidth] \setupFLOWshapes[framecolor=black,background=color,backgroundcolor=white,] \startFLOWchart[DSP]  \startFLOWcell \name{input} \location{1,1} \shape{44} \connection[rl] {lowpass1} \comment[t]{$x(t)$} \comment[b]{$X(t)$} \stopFLOWcell  \startFLOWcell \name {lowpass1} \location {2,1} \text {Low Pass\crlf Filter} \connection[bt] {adconv} \comment[r]{$x_f(t)$} \comment[l]{$X_f(t)$} \stopFLOWcell  \startFLOWcell \name{adconv} \location{2,2} \text{Analog/Digital\crlf conversion} \connection[rl]{dsp} \comment[t]{$x[n]$} \comment[b]{$X(\Omega)$} \stopFLOWcell  \startFLOWcell \name{dsp} \location{3,2} \text{Digital Signal\crlf Processing} \connection[rl]{daconv} \comment[t]{$y[n]$} \comment[b]{$Y(\Omega)$} \stopFLOWcell  \startFLOWcell \name{daconv} \location{4,2} \text{Digital/Analog\crlf Conversion} \connection[bt]{lowpass2} \comment[r]{$y_d(t)$} \comment[l]{$Y_d(t)$} \stopFLOWcell  \startFLOWcell \name {lowpass2} \location {4,3} \text {Low Pass\crlf Filter} \connection[rl]{output} \comment[t]{$y_f(t)$} \comment[b]{$Y_f(t)$} \stopFLOWcell  \startFLOWcell \name {output} \location {5,3} \shape{44} \stopFLOWcell \stopFLOWchart \placefigure[here][fig:chart]{The path of signal in digital processing.}{ \FLOWchart[DSP]}</context> ==Syntax for {{cmd|connection}}== <texcode>\connection [&lt;from&gt;&lt;to&gt;] {&lt;FLOWcell&gt;}</texcode> <code><from></code> and <code><to></code> are the points from which point to which point the connection should be drawn. The following graphic depicts the names of the points. <texcode> -t t +t ---------------- +l | | +r | | l | | r | | -l | | -r | | ---------------- -b b +b </texcode> ===Example=== The following code draws a line from the left top point of the current cell to the right bottom point of cell <code>foobar</wwwcode>.pragma <texcode>\connection [-adet+b] {foobar}</texcode> The code for connections in the pdf manual, e.g.com <texcode>\connection[nb,pt]{episode_02_title}</texcode>No longer works ==Aligning text within the cell== To align left or right, use <texcode>\text[l]{left}\text[r]{right}</generaltexcode> Forcing a paragraph break with \par in a cell does not work... <texcode>\text[l]{firstline \par secondline}</manualstexcode> Whereas using \\ does work, so: <texcode>\text[l]{firstline \\ secondline}</texcode> == Further hints == * [[manual:mchart.pdf |Charts uncovered] by Pragma] manual* There was a [http://www.im.ps.pl/context/?en Flowchart creater] to create flowchart code using javascript, but it disappeared.* The [[manual:nodes.pdf|nodes module]] covers even more applications of charts.