Re: debuging plot

[Marco Atzeri]

On 11/4/2014 5:00 PM, CdeMills wrote:
> Hello,
>
> I made a few improvements to the "dataframe" package recently. For now,
> plotting one column versus another one work, but vector versus matrix fails.
>
> Simple example:
> t=((0:10).'/10); x=[sin(2*pi*t) cos(2*pi*t)]; plot(t, x) %# OK
> plot(dataframe(t), dataframe(x))
> error: invalid value for array property "ydata"
> error: called from
>      __line__ at line 119 column 16
>      line at line 54 column 8
>      __plt__>__plt2vm__ at line 432 column 15
>      __plt__>__plt2__ at line 245 column 14
>      __plt__ at line 113 column 17
>      plot at line 220 column 10
> stopped in /usr/share/octave/3.8.2/m/plot/draw/private/__line__.m
> error: horizontal dimensions mismatch (11x1 vs 2x1)
> error: called from:
> error:   /usr/share/octave/3.8.2/m/plot/util/private/__go_draw_axes__.m at
> line -1, column -1
> error:   /usr/share/octave/3.8.2/m/plot/util/private/__go_draw_figure__.m at
> line 161, column 19
> error:   /usr/share/octave/3.8.2/m/plot/util/__gnuplot_drawnow__.m at line
> -1, column -1
>
> context: octave-3.8.2 on cygwin; dataframe from the sourceforge repo. I
> would like to solve this issue before making a new release. How can I debug
> this issue ?

I guess you need to extract the data to plot from the dataframe
plot can handle double but not a dataframe.

Trying with octave-dataframe    1.0.0-1

octave:11> dt=dataframe(t)
dt = dataframe with 11 rows and 1 columns
_1       t
Nr  double
 1 0.00000
 2 0.10000
 3 0.20000
 4 0.30000
 5 0.40000
 6 0.50000
 7 0.60000
 8 0.70000
 9 0.80000
10 0.90000
11 1.00000

octave:12> dx=dataframe(x)
dx = dataframe with 11 rows and 2 columns
_1       x1       x2
Nr   double   double
 1  0.00000  1.00000
 2  0.58779  0.80902
 3  0.95106  0.30902
 4  0.95106 -0.30902
 5  0.58779 -0.80902
 6  0.00000 -1.00000
 7 -0.58779 -0.80902
 8 -0.95106 -0.30902
 9 -0.95106  0.30902
10 -0.58779  0.80902
11 -0.00000  1.00000

octave:13> whos
Variables in the current scope:

   Attr Name               Size                     Bytes  Class
   ==== ====               ====                     =====  =====
        ans               11x2                        314  dataframe
        dt                11x1                        208  dataframe
        dx                11x2                        314  dataframe
        packages_dir       1x1                        115  struct
        packages_list      1x1                        115  struct
        t                 11x1                         88  double
        x                 11x2                        176  double



> Regards
>
> Pascal

Regards
Marco