[Scilab-users] How to produce a filled staircase plot

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Antoine Monmayrant-2 Antoine Monmayrant-2
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[Scilab-users] How to produce a filled staircase plot

Hi everyone,

I'm trying to do a filled staircase plot (ie a staircase where the area between the staircase and the x axis is filled with a solid color).
Is there a given combination of polyline_style and fill_mode, etc ... that can do this?
Or should I resort to building a polygon by hand?

Thanks in advance,

Antoine

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Christophe Dang Ngoc Chan Christophe Dang Ngoc Chan
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Re: How to produce a filled staircase plot

Hello,

> De : Antoine Monmayrant
> Envoyé : mardi 6 octobre 2015 00:01
>
> I'm trying to do a filled staircase plot
> (ie a staircase where the area between the staircase and the x axis is filled with a solid color).
> Is there a given combination of polyline_style and fill_mode, etc ... that can do this?

I tried polt2d2 (or plot2d and polyline_style=2)
With fill_mode="on" and background=2 (or whatever)
And get some weird result: only the caption is filled, not the polyline.

This is not what I expect when I read the help page
http://help.scilab.org/docs/5.5.2/en_US/polyline_properties.html

Did I misunderstand something or should I fill a bug report (is there already a bug report)?

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Mechanical calculation engineer
This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error), please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.
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Serge Steer-3 Serge Steer-3
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Re: How to produce a filled staircase plot

In reply to this post by Antoine Monmayrant-2
Le 06/10/2015 00:01, Antoine Monmayrant a écrit :

> Hi everyone,
>
> I'm trying to do a filled staircase plot (ie a staircase where the area between the staircase and the x axis is filled with a solid color).
> Is there a given combination of polyline_style and fill_mode, etc ... that can do this?
> Or should I resort to building a polygon by hand?
>
> Thanks in advance,
>
> Antoine
>
> _______________________________________________
> users mailing list
> [hidden email]
> http://lists.scilab.org/mailman/listinfo/users
>
May be the bar mode can help you
x=linspace(0,%pi,10);y=sin(x);
clf;plot(x,y);e=gce();e=e.children;
e.polyline_style=6;e.bar_width=0.5;
e.background=2;
e.line_mode="off";
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Antoine Monmayrant-2 Antoine Monmayrant-2
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Re: How to produce a filled staircase plot

Thank you Serge for this solution, but it does not work for me: the "bars" in my case are not regular.
I am simulating an exponential random decay: starting from a number N0, my population decreases by jumps of N0->N0-1 that occure at random times, following an exponential law (see the attached plot).
For the moment, I just build my polygon by hand, but it adds quite a lot of "noise" on top of the code that I intent to show to my students.
I was hoping for a cleaner solution.

Thanks anyway,

Cheers,

Antoine


Le Mardi 6 Octobre 2015 11:42 CEST, Serge Steer <[hidden email]> a écrit:

> Le 06/10/2015 00:01, Antoine Monmayrant a écrit :
> > Hi everyone,
> >
> > I'm trying to do a filled staircase plot (ie a staircase where the area between the staircase and the x axis is filled with a solid color).
> > Is there a given combination of polyline_style and fill_mode, etc ... that can do this?
> > Or should I resort to building a polygon by hand?
> >
> > Thanks in advance,
> >
> > Antoine
> >
> > _______________________________________________
> > users mailing list
> > [hidden email]
> > http://lists.scilab.org/mailman/listinfo/users
> >
> May be the bar mode can help you
> x=linspace(0,%pi,10);y=sin(x);
> clf;plot(x,y);e=gce();e=e.children;
> e.polyline_style=6;e.bar_width=0.5;
> e.background=2;
> e.line_mode="off";
> _______________________________________________
> users mailing list
> [hidden email]
> http://lists.scilab.org/mailman/listinfo/users
>





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decay.png (21K) Download Attachment
Rafael Guerra Rafael Guerra
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Re: How to produce a filled staircase plot

Hello Antoine,

 

An attempt below, not particularly clean but I hope not too dirty either:

 

//INPUT

t = [ 0  2  5 10 12 17 20 30 35 45 60]'*0.1;

N = [20 18 15 14 12  9  6  4  3  2  1]';

 

t2=[];N2=[];

ns= length(t);

t2(1:2:2*ns) = t; 

t2(2:2:2*ns) = [t(2:$)-%eps; t($)];

N2(1:2:2*ns-1) = N;

N2(2:2:2*ns) = N;

clf;

xfpoly([t2(1)-%eps;t2;t2($)+%eps],[0;N2;0]);

h = gce();

h.line_mode = "off";

h.background = color('gray');

plot(t2,N2,'black', t2,21*exp(-t2/2),'red');

 

 

Regards,

 

Rafael

 

-----Original Message-----
From: users [mailto:[hidden email]] On Behalf Of Antoine Monmayrant
Sent: Tuesday, October 06, 2015 10:57 AM
To: Users mailing list for Scilab <[hidden email]>
Subject: Re: [Scilab-users] How to produce a filled staircase plot

 

Thank you Serge for this solution, but it does not work for me: the "bars" in my case are not regular.

I am simulating an exponential random decay: starting from a number N0, my population decreases by jumps of N0->N0-1 that occur at random times, following an exponential law (see the attached plot).

For the moment, I just build my polygon by hand, but it adds quite a lot of "noise" on top of the code that I intent to show to my students.

I was hoping for a cleaner solution.

 

Thanks anyway,

 

Cheers,

 

Antoine

 

Le Mardi 6 Octobre 2015 11:42 CEST, Serge Steer <[hidden email]> a écrit:

 

> Le 06/10/2015 00:01, Antoine Monmayrant a écrit :

> > Hi everyone,

> >

> > I'm trying to do a filled staircase plot (ie a staircase where the area between the staircase and the x axis is filled with a solid color).

> > Is there a given combination of polyline_style and fill_mode, etc ... that can do this?

> > Or should I resort to building a polygon by hand?

> >

> > Thanks in advance,

> >

> > Antoine

> >

> > _______________________________________________

> > users mailing list

> > [hidden email]

> > http://lists.scilab.org/mailman/listinfo/users

> >

> May be the bar mode can help you

> x=linspace(0,%pi,10);y=sin(x);

> clf;plot(x,y);e=gce();e=e.children;

> e.polyline_style=6;e.bar_width=0.5;

> e.background=2;

> e.line_mode="off";

> _______________________________________________

> users mailing list

> [hidden email]

> http://lists.scilab.org/mailman/listinfo/users

>

 

 

 

 

 


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yanndebray yanndebray
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Re: How to produce a filled staircase plot

Hello Raphael,

Nice plot, but sadly it doesn't rescale.
Do you have an idea how to make it fit the axes, to rescale automatically?

Yann

Le 07/10/2015 00:17, Rafael Guera a écrit :
Hello Antoine,
 
An attempt below, not particularly clean but I hope not too dirty either:
 
//INPUT
t = [ 0  2  5 10 12 17 20 30 35 45 60]'*0.1;
N = [20 18 15 14 12  9  6  4  3  2  1]';
 
t2=[];N2=[];
ns= length(t);
t2(1:2:2*ns) = t;  
t2(2:2:2*ns) = [t(2:$)-%eps; t($)];
N2(1:2:2*ns-1) = N;
N2(2:2:2*ns) = N;
clf;
xfpoly([t2(1)-%eps;t2;t2($)+%eps],[0;N2;0]);
h = gce();
h.line_mode = "off";
h.background = color('gray');
plot(t2,N2,'black', t2,21*exp(-t2/2),'red');
 
 
Regards,
 
Rafael
 
-----Original Message-----
From: users [[hidden email]] On Behalf Of Antoine Monmayrant
Sent: Tuesday, October 06, 2015 10:57 AM
To: Users mailing list for Scilab [hidden email]
Subject: Re: [Scilab-users] How to produce a filled staircase plot
 
Thank you Serge for this solution, but it does not work for me: the "bars" in my case are not regular.
I am simulating an exponential random decay: starting from a number N0, my population decreases by jumps of N0->N0-1 that occur at random times, following an exponential law (see the attached plot).
For the moment, I just build my polygon by hand, but it adds quite a lot of "noise" on top of the code that I intent to show to my students.
I was hoping for a cleaner solution.
 
Thanks anyway,
 
Cheers,
 
Antoine
 
Le Mardi 6 Octobre 2015 11:42 CEST, Serge Steer < [hidden email] [hidden email]> a écrit: 
 
Le 06/10/2015 00:01, Antoine Monmayrant a écrit :
Hi everyone,

I'm trying to do a filled staircase plot (ie a staircase where the area between the staircase and the x axis is filled with a solid color).
Is there a given combination of polyline_style and fill_mode, etc ... that can do this?
Or should I resort to building a polygon by hand?

Thanks in advance,

Antoine

_______________________________________________
users mailing list
 [hidden email] [hidden email]
 <http://lists.scilab.org/mailman/listinfo/users> http://lists.scilab.org/mailman/listinfo/users

May be the bar mode can help you
x=linspace(0,%pi,10);y=sin(x);
clf;plot(x,y);e=gce();e=e.children;
e.polyline_style=6;e.bar_width=0.5;
e.background=2;
e.line_mode="off";
_______________________________________________
users mailing list
 [hidden email] [hidden email]
 <http://lists.scilab.org/mailman/listinfo/users> http://lists.scilab.org/mailman/listinfo/users

 
 
 
 
 



_______________________________________________
users mailing list
[hidden email]
http://lists.scilab.org/mailman/listinfo/users


_______________________________________________
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Antoine Monmayrant Antoine Monmayrant
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Re: How to produce a filled staircase plot

Le 10/07/2015 09:41 AM, Yann DEBRAY a écrit :
Hello Raphael,

Nice plot, but sadly it doesn't rescale.
Do you have an idea how to make it fit the axes, to rescale automatically?

You can calculate your data_bounds and set them after plotting.
Alernatively, use my method that does not rely on xfpoly, but on plot that rescales automatically:

//I want to staircase plot N(Decay_times)
    N=[N2,N2-cumsum(ones(Decay_times))+1];
    Np1=[N2-cumsum(ones(Decay_times))+1,0];
    Ns=matrix([N;Np1],2*prod(size(N)));
    Decay_times=[0,Decay_times];
   
    D_t=matrix([Decay_times;Decay_times],2*prod(size(Decay_times)));
//in the end, I plot Ns(D_t)
    Ns=[0;Ns];
    D_t=[0;D_t];
//plot it
    plot(D_t,Ns, 'k-');
//fill the bacground
    e=gce();
    e.children.polyline_style=1;
    e.children.closed='off';
    e.children.background=color('gray');


Yann

Le 07/10/2015 00:17, Rafael Guera a écrit :
Hello Antoine,
 
An attempt below, not particularly clean but I hope not too dirty either:
 
//INPUT
t = [ 0  2  5 10 12 17 20 30 35 45 60]'*0.1;
N = [20 18 15 14 12  9  6  4  3  2  1]';
 
t2=[];N2=[];
ns= length(t);
t2(1:2:2*ns) = t;  
t2(2:2:2*ns) = [t(2:$)-%eps; t($)];
N2(1:2:2*ns-1) = N;
N2(2:2:2*ns) = N;
clf;
xfpoly([t2(1)-%eps;t2;t2($)+%eps],[0;N2;0]);
h = gce();
h.line_mode = "off";
h.background = color('gray');
plot(t2,N2,'black', t2,21*exp(-t2/2),'red');
 
 
Regards,
 
Rafael
 
-----Original Message-----
From: users [[hidden email]] On Behalf Of Antoine Monmayrant
Sent: Tuesday, October 06, 2015 10:57 AM
To: Users mailing list for Scilab [hidden email]
Subject: Re: [Scilab-users] How to produce a filled staircase plot
 
Thank you Serge for this solution, but it does not work for me: the "bars" in my case are not regular.
I am simulating an exponential random decay: starting from a number N0, my population decreases by jumps of N0->N0-1 that occur at random times, following an exponential law (see the attached plot).
For the moment, I just build my polygon by hand, but it adds quite a lot of "noise" on top of the code that I intent to show to my students.
I was hoping for a cleaner solution.
 
Thanks anyway,
 
Cheers,
 
Antoine
 
Le Mardi 6 Octobre 2015 11:42 CEST, Serge Steer < [hidden email] [hidden email]> a écrit: 
 
Le 06/10/2015 00:01, Antoine Monmayrant a écrit :
Hi everyone,

I'm trying to do a filled staircase plot (ie a staircase where the area between the staircase and the x axis is filled with a solid color).
Is there a given combination of polyline_style and fill_mode, etc ... that can do this?
Or should I resort to building a polygon by hand?

Thanks in advance,

Antoine

_______________________________________________
users mailing list
 [hidden email] [hidden email]
 <http://lists.scilab.org/mailman/listinfo/users> http://lists.scilab.org/mailman/listinfo/users

May be the bar mode can help you
x=linspace(0,%pi,10);y=sin(x);
clf;plot(x,y);e=gce();e=e.children;
e.polyline_style=6;e.bar_width=0.5;
e.background=2;
e.line_mode="off";
_______________________________________________
users mailing list
 [hidden email] [hidden email]
 <http://lists.scilab.org/mailman/listinfo/users> http://lists.scilab.org/mailman/listinfo/users

 
 
 
 
 



_______________________________________________
users mailing list
[hidden email]
http://lists.scilab.org/mailman/listinfo/users



_______________________________________________
users mailing list
[hidden email]
http://lists.scilab.org/mailman/listinfo/users


-- 
+++++++++++++++++++++++++++++++++++++++++++++++++++++++

 Antoine Monmayrant LAAS - CNRS
 7 avenue du Colonel Roche
 BP 54200
 31031 TOULOUSE Cedex 4
 FRANCE

 Tel:+33 5 61 33 64 59
 
 email : [hidden email]
 permanent email : [hidden email]

+++++++++++++++++++++++++++++++++++++++++++++++++++++++


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Serge Steer-3 Serge Steer-3
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Re: How to produce a filled staircase plot

Under Scilab-5.5.2 xfpoly rescale the graph automatically as plot does

A little more simple (efficient?) code:

t = [ 0  2  5 10 12 17 20 30 35 45 60]'*0.1;
N = [20 18 15 14 12  9  6  4  3  2  1]';

t2=matrix([t' t($); t' t($)],-1,1);
N2=matrix([0 N'; N' 0],-1,1)

clf;
xfpoly(t2,N2);
h = gce();
h.line_mode = "off";
h.background = color('gray');
plot(t2(2:$-1),N2(2:$-1),'black', t2(2:$-1),21*exp(-t2(2:$-1)/2),'red');
 



 
Le 07/10/2015 09:58, Antoine Monmayrant a écrit :
Le 10/07/2015 09:41 AM, Yann DEBRAY a écrit :
Hello Raphael,

Nice plot, but sadly it doesn't rescale.
Do you have an idea how to make it fit the axes, to rescale automatically?

You can calculate your data_bounds and set them after plotting.
Alernatively, use my method that does not rely on xfpoly, but on plot that rescales automatically:

//I want to staircase plot N(Decay_times)
    N=[N2,N2-cumsum(ones(Decay_times))+1];
    Np1=[N2-cumsum(ones(Decay_times))+1,0];
    Ns=matrix([N;Np1],2*prod(size(N)));
    Decay_times=[0,Decay_times];
   
    D_t=matrix([Decay_times;Decay_times],2*prod(size(Decay_times)));
//in the end, I plot Ns(D_t)
    Ns=[0;Ns];
    D_t=[0;D_t];
//plot it
    plot(D_t,Ns, 'k-');
//fill the bacground
    e=gce();
    e.children.polyline_style=1;
    e.children.closed='off';
    e.children.background=color('gray');


Yann

Le 07/10/2015 00:17, Rafael Guera a écrit :
Hello Antoine,
 
An attempt below, not particularly clean but I hope not too dirty either:
 
//INPUT
t = [ 0  2  5 10 12 17 20 30 35 45 60]'*0.1;
N = [20 18 15 14 12  9  6  4  3  2  1]';
 
t2=[];N2=[];
ns= length(t);
t2(1:2:2*ns) = t;  
t2(2:2:2*ns) = [t(2:$)-%eps; t($)];
N2(1:2:2*ns-1) = N;
N2(2:2:2*ns) = N;
clf;
xfpoly([t2(1)-%eps;t2;t2($)+%eps],[0;N2;0]);
h = gce();
h.line_mode = "off";
h.background = color('gray');
plot(t2,N2,'black', t2,21*exp(-t2/2),'red');
 
 
Regards,
 
Rafael
 
-----Original Message-----
From: users [[hidden email]] On Behalf Of Antoine Monmayrant
Sent: Tuesday, October 06, 2015 10:57 AM
To: Users mailing list for Scilab [hidden email]
Subject: Re: [Scilab-users] How to produce a filled staircase plot
 
Thank you Serge for this solution, but it does not work for me: the "bars" in my case are not regular.
I am simulating an exponential random decay: starting from a number N0, my population decreases by jumps of N0->N0-1 that occur at random times, following an exponential law (see the attached plot).
For the moment, I just build my polygon by hand, but it adds quite a lot of "noise" on top of the code that I intent to show to my students.
I was hoping for a cleaner solution.
 
Thanks anyway,
 
Cheers,
 
Antoine
 
Le Mardi 6 Octobre 2015 11:42 CEST, Serge Steer < [hidden email] [hidden email]> a écrit: 
 
Le 06/10/2015 00:01, Antoine Monmayrant a écrit :
Hi everyone,

I'm trying to do a filled staircase plot (ie a staircase where the area between the staircase and the x axis is filled with a solid color).
Is there a given combination of polyline_style and fill_mode, etc ... that can do this?
Or should I resort to building a polygon by hand?

Thanks in advance,

Antoine

_______________________________________________
users mailing list
 [hidden email] [hidden email]
 <http://lists.scilab.org/mailman/listinfo/users> http://lists.scilab.org/mailman/listinfo/users

May be the bar mode can help you
x=linspace(0,%pi,10);y=sin(x);
clf;plot(x,y);e=gce();e=e.children;
e.polyline_style=6;e.bar_width=0.5;
e.background=2;
e.line_mode="off";
_______________________________________________
users mailing list
 [hidden email] [hidden email]
 <http://lists.scilab.org/mailman/listinfo/users> http://lists.scilab.org/mailman/listinfo/users

 
 
 
 
 



_______________________________________________
users mailing list
[hidden email]
http://lists.scilab.org/mailman/listinfo/users



_______________________________________________
users mailing list
[hidden email]
http://lists.scilab.org/mailman/listinfo/users


-- 
+++++++++++++++++++++++++++++++++++++++++++++++++++++++

 Antoine Monmayrant LAAS - CNRS
 7 avenue du Colonel Roche
 BP 54200
 31031 TOULOUSE Cedex 4
 FRANCE

 Tel:+33 5 61 33 64 59
 
 email : [hidden email]
 permanent email : [hidden email]

+++++++++++++++++++++++++++++++++++++++++++++++++++++++



_______________________________________________
users mailing list
[hidden email]
http://lists.scilab.org/mailman/listinfo/users


_______________________________________________
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Rafael Guerra Rafael Guerra
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Re: How to produce a filled staircase plot


Very ingenious matrix trick, I loved it


Date: Wed, 7 Oct 2015 11:47:49 +0200
From: [hidden email]
To: [hidden email]
Subject: Re: [Scilab-users] How to produce a filled staircase plot

Under Scilab-5.5.2 xfpoly rescale the graph automatically as plot does

A little more simple (efficient?) code:

t = [ 0  2  5 10 12 17 20 30 35 45 60]'*0.1;
N = [20 18 15 14 12  9  6  4  3  2  1]';

t2=matrix([t' t($); t' t($)],-1,1);
N2=matrix([0 N'; N' 0],-1,1)

clf;
xfpoly(t2,N2);
h = gce();
h.line_mode = "off";
h.background = color('gray');
plot(t2(2:$-1),N2(2:$-1),'black', t2(2:$-1),21*exp(-t2(2:$-1)/2),'red');
 



 
Le 07/10/2015 09:58, Antoine Monmayrant a écrit :
Le 10/07/2015 09:41 AM, Yann DEBRAY a écrit :
Hello Raphael,

Nice plot, but sadly it doesn't rescale.
Do you have an idea how to make it fit the axes, to rescale automatically?

You can calculate your data_bounds and set them after plotting.
Alernatively, use my method that does not rely on xfpoly, but on plot that rescales automatically:

//I want to staircase plot N(Decay_times)
    N=[N2,N2-cumsum(ones(Decay_times))+1];
    Np1=[N2-cumsum(ones(Decay_times))+1,0];
    Ns=matrix([N;Np1],2*prod(size(N)));
    Decay_times=[0,Decay_times];
   
    D_t=matrix([Decay_times;Decay_times],2*prod(size(Decay_times)));
//in the end, I plot Ns(D_t)
    Ns=[0;Ns];
    D_t=[0;D_t];
//plot it
    plot(D_t,Ns, 'k-');
//fill the bacground
    e=gce();
    e.children.polyline_style=1;
    e.children.closed='off';
    e.children.background=color('gray');


Yann

Le 07/10/2015 00:17, Rafael Guera a écrit :
Hello Antoine,
 
An attempt below, not particularly clean but I hope not too dirty either:
 
//INPUT
t = [ 0  2  5 10 12 17 20 30 35 45 60]'*0.1;
N = [20 18 15 14 12  9  6  4  3  2  1]';
 
t2=[];N2=[];
ns= length(t);
t2(1:2:2*ns) = t;  
t2(2:2:2*ns) = [t(2:$)-%eps; t($)];
N2(1:2:2*ns-1) = N;
N2(2:2:2*ns) = N;
clf;
xfpoly([t2(1)-%eps;t2;t2($)+%eps],[0;N2;0]);
h = gce();
h.line_mode = "off";
h.background = color('gray');
plot(t2,N2,'black', t2,21*exp(-t2/2),'red');
 
 
Regards,
 
Rafael
 
-----Original Message-----
From: users [[hidden email]] On Behalf Of Antoine Monmayrant
Sent: Tuesday, October 06, 2015 10:57 AM
To: Users mailing list for Scilab [hidden email]
Subject: Re: [Scilab-users] How to produce a filled staircase plot
 
Thank you Serge for this solution, but it does not work for me: the "bars" in my case are not regular.
I am simulating an exponential random decay: starting from a number N0, my population decreases by jumps of N0->N0-1 that occur at random times, following an exponential law (see the attached plot).
For the moment, I just build my polygon by hand, but it adds quite a lot of "noise" on top of the code that I intent to show to my students.
I was hoping for a cleaner solution.
 
Thanks anyway,
 
Cheers,
 
Antoine
 
Le Mardi 6 Octobre 2015 11:42 CEST, Serge Steer < [hidden email] [hidden email]> a écrit: 
 
Le 06/10/2015 00:01, Antoine Monmayrant a écrit :
Hi everyone,

I'm trying to do a filled staircase plot (ie a staircase where the area between the staircase and the x axis is filled with a solid color).
Is there a given combination of polyline_style and fill_mode, etc ... that can do this?
Or should I resort to building a polygon by hand?

Thanks in advance,

Antoine

_______________________________________________
users mailing list
 [hidden email] [hidden email]
 <http://lists.scilab.org/mailman/listinfo/users> http://lists.scilab.org/mailman/listinfo/users

May be the bar mode can help you
x=linspace(0,%pi,10);y=sin(x);
clf;plot(x,y);e=gce();e=e.children;
e.polyline_style=6;e.bar_width=0.5;
e.background=2;
e.line_mode="off";
_______________________________________________
users mailing list
 [hidden email] [hidden email]
 <http://lists.scilab.org/mailman/listinfo/users> http://lists.scilab.org/mailman/listinfo/users



_______________________________________________
users mailing list
[hidden email]
http://lists.scilab.org/mailman/listinfo/users