What is a routing grid?

[amorax]

So, I've gotten involved with this program called Circuit Wizard and, after having taken a look around, I've noticed that it really lacks some good documentation. For one thing, it doesn't say what a routing grid is, which is something that seems like it would be very important. Would someone care to help me out and explain exactly what a routing grid is in relation to PCB circuits?

EDIT: And before you ask, yes, I have tried google.

[Cathbadh]

A routing grid really isn't anything but a guide or template; something that helps you and the auto-router place traces in such a way as to reduce errors and avoid problems on printing. Chances are, you can probably just leave it as default, as it has little effect on the electrical properties of your PCB.

Alternatively, a routing grid might pertain exclusively to the auto-router. (It is like this in Eagle CAD) The auto-router tool is a tool that tries to automatically lay traces in the most optimal fashion possible. It does this by running some MST algorithms on an expansive graph to find trace paths that are shortest to therefore reduce copper and capacitance and resistance. However, it can only handle a finite level of nodes on the graph, so these nodes are placed on a virtual "grid" on the board. In any case, the resultant traces should align with this grid.

[amorax]

[QUOTE=Cathbadh;16088231]A routing grid really isn't anything but a guide or template; something that helps you and the auto-router place traces in such a way as to reduce errors and avoid problems on printing. Chances are, you can probably just leave it as default, as it has little effect on the electrical properties of your PCB.

Alternatively, a routing grid might pertain exclusively to the auto-router. (It is like this in Eagle CAD) The auto-router tool is a tool that tries to automatically lay traces in the most optimal fashion possible. It does this by running some MST algorithms on an expansive graph to find trace paths that are shortest to therefore reduce copper and capacitance and resistance. However, it can only handle a finite level of nodes on the graph, so these nodes are placed on a virtual "grid" on the board. In any case, the resultant traces should align with this grid.[/QUOTE]

OK, now can you explain the problem I've encountered in the thread below (URL tags are being gay for some reason)?

[url]http://www.facepunch.com/showthread.php?t=773409[/url]