Latest Contributions by StanleyMax

‎04-08-2013

Hi Joe, Your reply was thorough, instructive, and extraordinarily helpful. It seems to have solved the problem, and I am now getting my map to draw just as I wanted. I can assure you that I will give you full credit. Thank you again. You are a great teacher. Stanley

‎04-07-2013

Take a look at creating a summary table: you can summarize on your region field and then create stats on any other field you may have. Hi Joe, Thank you very much for your response. I am still confused, however. So first, I summarize on the column entitled "region." But then, I have these three questions: > What statistic do I need? The average, the sum, or what, please? > Into what column do I place this statistic? > And here is what really perplexes me: How do I map this data? I guess that I don't understand the difference between an attribute table, to which a shapefile is attached, and a database file. This procedure of creating a summary table apparently creates a database file. But then how do I map the data that gets generated? I am sorry to be so thick on this. Thank you. Stanley

‎04-06-2013

Hi everyone, Among the fields in a shapefile's attribute table are two for state population in 2000 and state population in 2010. For these two, I need to create the percentage change for these and put that result into another field. I will do that with the following formula using the field calculator: PopulationChange = (pop2010 - pop2000) / pop2000 OK. No problem there. But here is what I don't know how to do: Each state is also assigned to a region, and that assignment is in another field. For example, California is in the Pacific Region and Massachusetts is in the New England Region, and so on and so forth. I need to aggregate the population data at this regional level. Thus, I will get the population change from 2000 to 2010 at this aggregated level. I do not know how to do this aggregation using the field calculator. Could someone please tell me how to do this. Thank you very much for your help. Stanley

‎02-17-2013

Hi Anthony, Thank you again so much. You have been instrumental in enabling me to move on with my project. Stanley

‎02-17-2013

Hi Anthony, Thank you very much. That solved everything. And I guess that I want to save the data as a shapefile, right? Because the last thing that I need to do is spacial statistics on my x,y data. In particular, I want to find the mean and standard deviation of the points. Stanley

‎02-17-2013

Hi everyone, This should not be that difficult, and once I learn how to do it, I should be all set. But right now, I am confused. I created a database (the extension is .MDB) with about 60 records. Each record has a separate field containing the easting and northing for buildings on my campus (Towson University, in case anyone is interested). The database also has a field for the name of the building and the total area of the building, but it is the location fields that interest me right now. I don't understand how to get those points plotted on my map. If someone could tell me how to do this, I would be grateful. Once I do get those points plotted, then, as I understand the procedure, I should somehow create a layer file for them. Is that correct? Thank you very much. Stanley

‎01-13-2013

Hi Wade, Thank you so much. This was great information, and it solved the entire problem. In fact, I experimented a bit, and I learned that I did not even have to go through the effort of clearing out the white background by means of Photoshop when I did what you advised. Applying the steps that you explained eliminated the white background even when it existed in the original TIFF file. Thanks again. Great work. Stanley

‎01-13-2013

Hi everyone, I am overlaying a TIFF image onto the World Topographic Map that I downloaded from ESRI ArcGIS Online. Now, using Photoshop I have already removed the white background in the original TIFF image. (This was a quick and easy thing to do using the magic-wand tool.) Thus, the TIFF file contains only black showing a map outline, symbols, and words. The problem is that when I add this TIFF file to my map in ArcGIS a white background shows up again. Is there a way to make that white background disappear? Thank you very much. Stanley

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Latest Contributions by StanleyMax

Re: How to aggregate data in an attribute table

Re: How to aggregate data in an attribute table

How to aggregate data in an attribute table

Re: Adding x,y data to my map using ArcMap 10.1

Re: Adding x,y data to my map using ArcMap 10.1

Adding x,y data to my map using ArcMap 10.1

Re: How to remove the white background from a TIFF image

How to remove the white background from a TIFF image