topic Re: Zooming in to 1:1 issues in ArcGIS Pro Questions

Zooming in to 1:1 issues

Anonymous User — Wed, 08 Aug 2018 15:38:05 GMT

I am working with a floor plan and when I start zooming in to 1:1 the line features don't display correctly.

I've attached 3 screen shots of what is happening. when I am out at 1:25 everything is normal. Once I start to get closer at 1:4 things start to get a little wonky then at 1:1 they get even more weird. when I select the features the selection is correct.

Is there a fix for this?

Thanks

Re: Zooming in to 1:1 issues

DanPatterson_Retired — Wed, 08 Aug 2018 20:29:38 GMT

What is the actual physical dimensions (not the scale)?

Is the line actually a segmented sequence of lines? or is it how it is being shown?

Re: Zooming in to 1:1 issues

Anonymous User — Thu, 09 Aug 2018 12:22:45 GMT

That object is a door from a building blue print, it's 1.03m long

the line is a single segment

Re: Zooming in to 1:1 issues

George_Thompson — Thu, 09 Aug 2018 12:34:04 GMT

I have seen display issues when you are in past 1:10. There is nothing necessarily wrong/incorrect with the data, you are just zoomed in past what is usable and what the tolerances are set to. When this happens, it causes the displayed data to show weirdness, as you are seeing.

I do not think that this is a defect but more of a display issues when zoomed into such a large scale like 1:1.

Is there a reason that you are zoomed in that close?

Re: Zooming in to 1:1 issues

DanPatterson_Retired — Thu, 09 Aug 2018 12:36:59 GMT

looks like a display issue, but I suspect that you will have to provide more info as to what file type it is (ie geodatabase featureclass, a cad layer etc etc).

not many people are working at that scale, so I will flag Kory Kramer‌ to see if he knows who to pass this on to

Re: Zooming in to 1:1 issues

KoryKramer — Thu, 09 Aug 2018 13:01:13 GMT

Is the data projected? If so, what is the projection?

And yes, what is the data format? Can you share the data, or even just this little section where you're seeing the issue?

Re: Zooming in to 1:1 issues

Anonymous User — Thu, 09 Aug 2018 13:03:50 GMT

I was trying to fix some topological errors

Re: Zooming in to 1:1 issues

Anonymous User — Thu, 09 Aug 2018 13:09:39 GMT

The data is stored in a file geodatabase as a feature class which is in NAD 83 and the map is in web Mercator.

unfortunate I am unable to share this data due to privacy concerns.

I did notice that when I put the map into the same coordinate system as the feature classes the display error goes away.

Re: Zooming in to 1:1 issues

KoryKramer — Thu, 09 Aug 2018 13:12:43 GMT

NAD83? What was the specific projection? So when the data isn't being projected on the fly, there is no issue at 1:1, correct?

Re: Zooming in to 1:1 issues

Anonymous User — Thu, 09 Aug 2018 13:18:20 GMT

NAD 83 CSRS UTM zone 17N

Yes when not projecting on the fly there is no issue.

Re: Zooming in to 1:1 issues

KoryKramer — Thu, 09 Aug 2018 13:27:41 GMT

Glad there are no issues when projecting on the fly! I just ran a quick test with my own data in UTM 17N in a map in WGS84 web mercator auxiliary sphere and don't see the issue. I understand that you're not able to share the data but in this case I think we would need to get it to investigate this further.

Could you share just the geometry with no attributes? And just the small subsection that demonstrates the display issue?

Re: Zooming in to 1:1 issues

ThomasColson — Thu, 09 Aug 2018 13:43:30 GMT

FWIW, I get this often in Arc to, and is a function of geometry complexity. Key question here, is that open door thingy a true Bezier Curve, or a line with many vertices? Can you "densify" it if it is Bezier, convert it to a line with many vertices, same behavior? What about a simple dataset, say, just two lines intersecting?