Coordinates misunderstanding

RE: Coordinates misunderstanding

dukepro — Fri, 07 Sep 2012 12:37:46 GMT

On 08/22/2012 03:58 PM, Marc Péquignot wrote:

I went thru Eagle and did not found how to set (unset) Positive
Coordinates, except with command line. Is it right ? This will
probably solve the offset question. Thank you.

Look in the CAM processor. In each section (tab), there are a list of

check boxes in the Style pane. Mirror, rotate, upside down, and pos.

Coord are among them.

However the main problem (bug ?) is that the distance between two
objects (vias in my example) is greater than expected. This has
confirmed with more investigations. As stated before, an inch is
about 1016 mil in the HPGL output.

I think that there is an error in the HPGL output

Can't help you there. I haven't used HPGL since '89.

Enjoy,

- Chuck

RE: Coordinates misunderstanding

Former Member — Wed, 22 Aug 2012 19:58:11 GMT

I went thru Eagle and did not found how to set (unset) Positive Coordinates, except with command line. Is it right ?

This will probably solve the offset question.

Thank you.

However the main problem (bug ?) is that the distance between two objects (vias in my example) is greater than expected.

This has confirmed with more investigations. As stated before, an inch is about 1016 mil in the HPGL output.

I think that there is an error in the HPGL output

RE: Coordinates misunderstanding

dukepro — Wed, 22 Aug 2012 14:18:48 GMT

On 08/22/2012 04:38 AM, Marc Péquignot wrote:

Good morning,

I'm a retired computer engineer and I'm using (as a beginner) Eagle 6.2.0 Light. Just as an hobbyst.
My goal is to use Eagle in order to plot the circuit on a HPGL plotter.

I've made a basic test, directly on a board panel (no schema).

1 - Define first a dimension 3 inches X 2 inches.
2 - Create two VIAS at coordinates 1,1 and 2,1
3 - Draw a wire between the two Vias.

...

T01
X10150Y10150
X20150Y10150
M30

Now my questions :
1 / I was expecting 2 holes at coordinates
X10000Y10000
X20000Y10000
Why is there an offset of (15,15) mil in the output file ?

Make sure you have Positive Coordinates unchecked. I ran across this

some time ago as well. With this turned on, the output is offset such

that all elements are in Quadrant 1.

HTH,

- Chuck

RE: Coordinates misunderstanding

Former Member — Wed, 22 Aug 2012 10:22:56 GMT

Mistyping : not 2016 but 1016 mil for an inch