1 | initial version |

Some of the graphs produced by the financial functions PORT and STOCK do this automatically but the GRAPH command won't do this for general data graphs. However you can easily edit the graph script from the 'Edit Source' button on the Graph Viewer to do this yourself, adding the data using the 'Edit Data' button.

Use the gnuplot commands here is a simple example - note the commands related to "y2..." and the plot statement declaring which function uses which y axis:

```
set xrange [-10:10]
set ytics 10 nomirror tc lt 1
set ylabel '2*x' tc lt 1
set y2tics 20 nomirror tc lt 2
set y2label '4*x' tc lt 2
plot 2*x linetype 1, 4*x linetype 2 axes x1y2
```

Source: http://stackoverflow.com/questions/2827650/plotting-two-axes-in-gnuplot

2 | Used a better example |

Some of the graphs produced by the financial functions PORT and STOCK do this ~~automatically but ~~automatically. To do this with the GRAPH command ~~won't do this for general data graphs. However ~~you can easily edit the graph script from the 'Edit Source' button on the Graph Viewer to do this ~~yourself, ~~yourself - adding ~~the data ~~using the 'Edit Data' ~~button.~~

Use the gnuplot commands here button should you need to.

Here is a simple example ~~- note the commands related ~~where we both add data, y axes labels and a second axis by hand to ~~"y2..." and the plot statement declaring which function uses which y axis:~~an existing graph.

1) Open SHAZAM 11 and then open the 'Introduction' on the Help menu.

2) Open the Dynamic VAR.gnu Graph and click 'Edit Data'

Add an additional column (column 3 below)

3) Click 'Edit Source' and adjust the graph as follows:

Before:

~~set xrange [-10:10]
set ytics 10 nomirror tc lt 1
~~ # SHAZAM COMMAND:GRAPH
set samples 26
set title " Dynamic Forecast from VAR(1) Model for last 25 Obs of Y "
set key
set xlabel "TIME "
set ylabel
plot "Dynamic VAR_1.shd" using 1 lw 2 title "Y1 " w linespoint,\
"Dynamic VAR_1.shd" using 2 lw 2 title "PREDY1" w linespoint
quit

After:

```
# SHAZAM COMMAND:GRAPH
set samples 26
set title " Dynamic Forecast from VAR(1) Model for last 25 Obs of Y "
set key
set xlabel "TIME "
set ylabel
```~~'2*x' tc lt 1
~~"VAR"
# ADD 2ND AXES AND PLOT CONST
set y2label "CONST"
set y2range [-15:100]
set y2tics 20 nomirror tc lt 2
~~set y2label '4*x' tc lt 2
~~ plot ~~2*x linetype 1, 4*x linetype 2 ~~"Dynamic VAR_1.shd" using 1 lw 2 title "Y1 " w linespoint,\
"Dynamic VAR_1.shd" using 2 lw 2 title "PRED_Y1 " w linespoint,\
"Dynamic VAR_1.shd" using 3 lw 2 title "CONST_Y2 " w linespoints axes ~~x1y2
~~x1y2
quit

~~Source: http://stackoverflow.com/questions/2827650/plotting-two-axes-in-gnuplot~~

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