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Thanks to all who responded to my query; I really appreciated everyone taking the time to offer suggestions. The upshot is that when I checked what data storage cost in terms of service credits, it was 1.2 credits per GB per month, actually very manageable within our annual allotment for this sample layer. Several folks pointed out that, with a site license, we can set up our own arc server and host layers there, so that is definitely something I will look into over the summer. The other trick is to share as a Tile Package within ArcMap, so that the tiles are created locally, not within AGOL, which really would burn through the service credits. Thanks to Patrick from ESRI for explaining that and how to configure it. Thanks also to Tom and Rachel from ESRI for reaching out from other offices with suggestions and offers to help. So thanks again, I really appreciate being able to reach out to this list when I try to do something I've never done before! Deborah On Wed, Jun 22, 2016 at 9:57 AM, Deborah Reichler <[log in to unmask]> wrote: > I'm working with a professor of American History who is interested in > developing a mapping exercise for her students which will enable them to > more deeply explore African-American life in Chicago in the first half of > the 20th century. This project (at the moment) will involve doing research > in archives, newspapers, the census, and other sources, and attempting to > map the dense web of African-American life in Chicago after the "Great > Migration" and before WWII. > > Currently we are looking at ESRI StoryMaps for this project, because a) > this is a 100-level course, so the instructor wants something accessible > (and won't take a lot of time away from teaching the content of the > course); b) we have a site license for ESRI and have set up enterprise > login, plus AGOL has the ability to allow work on maps in small groups; c) > the StoryMaps templates will look nice as final projects. > > Since there has been so much change in Chicago in the 20th century (urban > renewal, major highways, clearing neighborhoods to build the U of I), we > are thinking of using Sanborn maps as the basemaps for this project so that > the students can work with something closer to the actual geography of the > earlier 20th century than modern basemaps show. We did find a source from > the U of I that has the Sanborn maps for our study area digitized and > available for download as jpegs. Yay! > > So I georeferenced the image of a sample page and was able to create both > a hosted service layer and a tile layer which can be added to the web map > for a Map Tour and indeed, does appear on the right-hand side over the > default basemap. But then I noticed that I can only zoom in to a certain > level (about 1:9000). > > I opened a case with ESRI to see if there was any way to get to, say 1:500 > so that students can zoom in and easily see individual buildings. It seems > that the only way to do this involves tiling so that the layer will take > over 6 GB to display. That seems like a lot of storage that we'd have to > "pay" for from service credits, plus we would need four or five of these > Sanborns for all the groups in the class. Then in my last communication > with ESRI, it seems that adding these additional scale levels would require > us to create a custom map rather than one of the existing Story Maps, so > that's an additional level of complexity we were hoping to avoid. > > So, my questions to you-all are: 1) is there any other way to add a > georeferenced image to the basemap of a Story Map that wouldn't require > huge amounts of storage or creating a custom map; and 2) does anyone have > any other ideas of how to approach this project other than using ESRI Story > Maps? > > Thanks for any insights and/or experience, > Deborah Reichler > Hamilton College > ------------------------------------------------------------------------- This list (NEARC-L) is an unmoderated discussion list for all NEARC Users. If you no longer wish to receive e-mail from this list, you can remove yourself by going to http://s.uconn.edu/nearcsubscribe.