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Home - General / All posts - How to change the "default" metrics in M9
drtees
147 post(s)
#27-Jul-22 18:05

We in the USA are waaay behind the curve in the standard units of measurement. In other words, we (or I) need to have our imported data projected using feet instead of meters. Sometimes when I import a new drawing or create a drawing using a Transform function, the original projection data is lost. I can re-apply a projection to that drawing. However, the newly projected drawing will default to meters instead of feet.

Is there a way that I can specify M9 to default to feet?

oeaulong

419 post(s)
#27-Jul-22 19:31

In the /Tools/Option dialog you can set a default projection. If you create the default projection with feet, then that is what will be used when you create a new Drawing. It won't change imported data. There is probably a way to set them as a batch with a combo script/query.

drtees
147 post(s)
#28-Jul-22 22:33

Thank you! I have already set the default projection to use feet as the metric. M9 appears to ignore that and default back to meters when importing unprojected material, such as AutoCAD layers.

adamw


10,126 post(s)
#28-Jul-22 09:14

I can re-apply a projection to that drawing. However, the newly projected drawing will default to meters instead of feet.

For US, there are projections in meters and projections in feet. Use the latter. If the projection you are after does not have an equivalent projection in feet, you can change the units to feet in the Metrics readout at the bottom of the Coordinate System dialog.

drtees
147 post(s)
#28-Jul-22 22:28

That appears to be a selection in Manifold 8. Manifold 9 provides projections (I am limited to Washington State Plane North and South), but setting the metrics from meters to feet must be specified at the projection is assigned. The metrics defaults to meters when I import new drawing layers, especially when the layer is coming from an AutoCAD file (there are other instances where this is the case, but I can't recall them at the moment). What I am looking for is to change the system metrics default so that I don't have imported layers coming in at three times too large and located way off the map.

Dimitri

7,066 post(s)
#29-Jul-22 05:57

You can specify a projection however you want in 9. Do that directly when setting the system default in Tools - Options, or, if you plan on using that often, add it to Favorites, taking care to specify override metrics if you want to change the metrics, like to feet instead of meters, as illustrated step by step in the Favorite Coordinate Systems topic. It's very easy to do. You can then choose that coordinate system as the system default for new components in Tools - Options.

adamw


10,126 post(s)
#29-Jul-22 07:30

Use State Plane projections from EPSG. Here are the variants for Washington North:

I marked projections in feet using a red pen.

There is no default for system metrics, there is only a default coordinate system. You might try adjusting the default coordinate system to something like pseudo-Mercator, but in feet, however I am not sure that will provide much value. Because if the data you import does not have any coordinate system attached, you have to assign the coordinate system manually anyway (and then you can simply pick one of the existing EPSG systems).

Attachments:
washington-north-epsg.png

drtees
147 post(s)
#29-Jul-22 15:36

Ah. I see that now. Thank you. I tested using the EPSG tab to set the projection to Washington State Plane North (ftUS) (EPSG:3690) and noted that while the XY metrics default to feet, the Z metric still defaults to meters. Something for me to remember when using data containing height information.

oeaulong

419 post(s)
#29-Jul-22 19:38

From EPSG:3960, make the metric change to feet (US Survey Foot), when done copy this projection. Then as Dimitri mentioned above, go to the favorites and add (with the metrics confirmed in the bottom edit box.) to favorites. This is the one to then put in the Options for default projection.

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