Error bar without union between points

[Darío]

Hi list, I'm doing a errorbar and the problem is wich the points in
the graphics are together between the points, i need only point witch
yours respective error bar.
The code is:
x=[ 1
2
3
4
5
6
7
8
9
10
11
];
y=[ 15.9
16.6
17.2
17.8
18.4
19.1
19.7
20.4
21
21.7
22.3
];
dy=0.1
figure (1);
h = errorbar (x, y,dy);
set (h, "linewidth", 0.1);
%set encoding iso_8859_1
hold on
plot (x,y,'@');%,'markersize',0);
grid on;        
axis([0.5 12 15 23]);
ylabel('Distancia entre par piezoeléctrico [cm]');
xlabel('Cantidad de longitudes de onda');
hold off
print -djpg long_de_onda.jpg

Thanks all

-- 
Darío
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Por favor, no utilice formatos de archivo propietarios para el intercambio
de documentos, como ser DOC, XLS, BMP, PPT, RAR, MP3, DWG,
MOV, FLV, WMV, etc.  sino  ODT, ODS, DJVU, PDF, TXT,
CSV, PNG, FLAC, OGV, GZ o cualquier otro que no obligue a utilizar
un programa de un fabricante concreto.
Info: http://www.gnu.org/philosophy/no-word-attachments.es.html
       http://www.vaslibre.org.ve/publicaciones/odfvsooxml-es.pdf
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      ): :(
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       "-"