| [ARCVIEW-L] Query question |
| 2009-11-02 10:16:00.0 |
| To all,
i have over 650,000 points in my shapefile, collected with gps. i do not need to visually show all these at the moment (creates too large of a pdf)..... i'm not that good w/ vb to query some out... but i was thinking that perhaps i could create a definition query of every 10th point... any suggestions how to do this? i know it must be easy... thanks, Christine Doolan, GIS Technician II Rockland County Planning Department - GIS 50 Sanatorium Road Building T Pomona, NY 10970 www.rocklandgov.com ----------------------------------------------------------------- This email, including attachments, may include confidential and/or proprietary information. If the reader of this email is not the intended recipient or his or her authorized agent, the reader is hereby notified that any dissemination, distribution, or copying of this email is prohibited. If you have received this email in error, please notify the sender by replying to this message and deleting this email immediately. |
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| [ARCVIEW-L] SUM: Query Question |
| 2009-11-02 02:05:00.0 |
| thanks to gary mohr and gerald gabrisch for their input!
1. Make sure each point has a unique ID number. Then run a select by attribute query: MOD( "Unique_ID",10) = 0 That selects all points with Unique_ID values divisible by 10 with a remainder of 0; every 10th point. 2. http://arcscripts.esri.com/details.asp?dbid=16289 original question: i have over 650,000 points in my shapefile, collected with gps. i do not need to visually show all these at the moment (creates too large of a pdf)..... i'm not that good w/ vb to query some out... but i was thinking that perhaps i could create a definition query of every 10th point... any suggestions how to do this? i know it must be easy... Christine Doolan, GIS Technician II Rockland County Planning Department - GIS 50 Sanatorium Road Building T Pomona, NY 10970 www.rocklandgov.com ----------------------------------------------------------------- This email, including attachments, may include confidential and/or proprietary information. If the reader of this email is not the intended recipient or his or her authorized agent, the reader is hereby notified that any dissemination, distribution, or copying of this email is prohibited. If you have received this email in error, please notify the sender by replying to this message and deleting this email immediately. |
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