Latest Contributions by JinMa

‎06-20-2012

I have a point feature class and a line feature class; there is no common field between these two feature classes, but I need to extract points that on the line features and keep attributes from both of the feature classes. Any idea? Thanks so much.

‎04-24-2012

I have a large feature class with million records. It has a 'CODE' field, this 'CODE' field has many duplicated value. I need to keep only one value from it, and delete all other duplicated values. Another words, I need to have unique field value. No duplicated field values. How can I do it? Thanks so much for any help.

‎04-10-2012

Thank you. But there is no Length, because I have points coverage... Hello Jin, I recommend you use something similar to following workflow: 1. Export the coverage to a shapefile or feature class 2. Use the project tool (Data Management > Projections and Transformations > Feature) to reproject your data to a Projected Coordinate System (not Geographic Coordinate System) 3. If you exported to a feature class in a geodatabase, shape length will be automatically generated for you using the same units as your coordinate system (likely feet or meters) 4. If you are using a shapefile, open the attribute table, click table options, and select Add Field 5. Name your field Length and make it type Double and click OK 6. Right click your new field header and select Calculate Geometry 7. Click Yes if you receive a message asking if you want to do this outside of an edit session 8. Select that you want to calculate length 9. Select the unit that you want to use and click OK

‎04-10-2012

I have a coverage that has the latitude and longitude as the basic coordinate system and need to compute distances of the polylines in miles or kilometers (or feet). I was wondering if any of you have a step by step suggestion for doing that. Thanks.

‎03-26-2012

Hi Jin, This is actually for ArcGIS 10. You will need to replace 'arcpy' with 'gp' to have this work with 9.3. Also, you will need to make a few changes to the 'SearchCursor'. Here is a link that discusses how to do this for 9.3. Hi, Jake, Thanks again for your help. Let me tell you more clear what I have and what I need to do: I have a FGDB feature class derived from intersect_analysis, it contains almost million records, and it has many duplicated records associated with field 'code'. I need to compare records with oracle, if oracle returns only one record associated with 'code', then keep or append to new feature class. I've tried hard, it's so slow, not success...I have Arc9.3. Thanks so much.

‎03-23-2012

Hi, Jake Thanks so much for your help. I have ArcGIS 9.3, does this code work?

‎03-21-2012

I need to use search cursor to iterate a feature class, get 'code' field from each row, use 'code' to query an oracle table, if returns multiple records associated with this code, then remove this code from the feature class, if returns single record associated with this code then keep. Any help or hint will be greatly appreciated!

‎02-10-2012

Are you looking for Clip? NO. Clip gives the golf courses area. but I need area that without golf course. If you see my attachment, the purple area is the area I need. ( green area is one feature of multip-part golf course)

‎02-10-2012

I have a big polygon, within the area, there are golf courses, I need to cut off multiple golf courses from it. Golf course is one feature (multipart feature polygon). I know can use Cut polygon, but it is not accurate and faster way. Is there a GIS function just remove the multipart polygon feature from the original polygon?

‎09-27-2011

I need to cut out several holes from a polygon. How can I do it? I have Arc9.3. Thanks.

‎09-06-2011

I have a circle polygon feature class. How do I split each circle into six equal parts. any idea or code is highly appreciated. Thanks

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Date Last Visited	‎11-11-2020 02:23 AM

My Ideas

Latest Contributions by JinMa

point and line, attribute

Find duplicate field values in ArcGIS using Python

Re: Converting distances from a coverage with lat long coordinates

Converting distances from a coverage with lat long coordinates

Re: feature class and SQL

Re: feature class and SQL

feature class and SQL

Re: divide polygon by a multi-part polygon

divide polygon by a multi-part polygon

How to cut holes from polygon?

split circle into 6 equal parts

feature class and SQL