[pstricks] psgrid

[Alain Matthes]

Howdy

with this
		\psset{xunit =1 cm , yunit =1 cm}
		\psset{gridlabels=0pt,gridwidth=0.8pt,subgridwidth=0.4pt}
		\begin{pspicture}(0,0)(10,2)
			\psgrid[subgriddiv=5]
	        \end{pspicture}

or that

		\psset{xunit =10 cm , yunit =1 cm}
		\psset{gridlabels=0pt,gridwidth=0.8pt,subgridwidth=0.4pt}
		\begin{pspicture}(0,0)(1,2)
			\psgrid[subgriddiv=5]
	        \end{pspicture}

i've no problem but with

		\psset{xunit =12.5 cm , yunit =1 cm}
		\psset{gridlabels=0pt,gridwidth=0.8pt,subgridwidth=0.4pt}
		\begin{pspicture}(0,0)(0.8,2)
			\psgrid[subgriddiv=5]
	        \end{pspicture}


The grid  is too long for me and i think that' a normal way (minimum  
1 unit ) but how to clip the grid to the pspicture ?

i can make my personnal grid but is it possible to use psgrid ?

thanks

Greetings

Alain Matthes