Folks:I've finally had a chance to play around with both the PR and the Match Display Area options. Awesome job to the IDV developers. Here are some impressions, some of which may have been noted before:
1. Great to see the match display area capability. It is a major advance. I can envision some new bundles that will allow me to just switch to a new area of interest by just selecting a new projection.
2. It would please me greatly if it were a possible default option in preferences. If I missed it, let me know where it is.
3. I tried switching between projections, which I hope to do a lot. Usually it worked well. Situations where the projection crossed the 0 or 180 meridian sometimes did weird things (attached are examples). These used the gfs time matched to global satellite imagery.
4. There are two places where one can change the spatial subset. One is when you right click on the data source and select "spatial subset." The other is when you select a variable and then "region." These have different looks and feels. In the former, you can click on a little box by "Match Display Area" or just draw a box for the plot region. In the other, there is a drop down for "use default region", "select a region", or "match display region." I prefer the latter approach with the drop down and suggest that it be incorporated into the data source right click option. Making the look and feel consistent will really help the user. There are probably other examples of where we could do this.
5. With regards to progressive resolution, I'm not sure what to recommend. It is clear that it could be a really useful feature, but I wonder if some thought is needed before we unleash it on the masses. In particular, it only works if you rubber band. I don't rubber band very much and I really wanted it for other zooming approaches. I often times zoom out, pan, and then zoom in again. PR could be nice for this, but one can't do this with rubber banding.
6. I wish to reemphasize that there are many uses where PR would be useful with the models and not just the HRRR. Especially, for example, when viewing wind vectors.
7. Overall, I think the match display area option looks really good. I need to test it some more, but it seems like it could be added for the next public release. I think PR is cool, but wonder if it would be better if we tinkered around with it before adding it to the next public release.
8. Totally unrelated, but I had never noticed before that "Match Time Driver" and "Set as Time Driver" are not options when you right click on a data source and selecte "times." That would be a very convenient addition.
Jim On 2/18/14 1:54 PM, Yuan Ho wrote:
Hi All,I would like to have another round of testing and feedback for the progressive resolution (PR) and new image chooser. Hopefully, this will be the final round and I can do a formal release very soon. Please download from the following link:http://www.unidata.ucar.edu/downloads/idv/nightly/index.jsp A few key points since the last communication:1) PR checkbox has moved to the User Preferences > View. The main concern is that we don't want to mix variables with PR and without PR and create complicated derived variable. It would be a better design for PR to be a global setting.2) Match Display Area is now a property in the gridded dataset. If this is checked in the properties window, it would be a default property for the whole dataset. It can be overwritten in the data subset panel. This change addresses Jim' request in the last meeting.3) PR has been implemented in the ADDE point data server.Another issue is the decision for the Naming of PR. I like to use Progressive Resolution, and Don's pick is Progressive Disclosure. In most situations of rubber band box (RBB), there is no feature hiding being disclosed. In the case of point data, RBB may bring out more stations in the view window. I would like to know your opinion here.Thanks, Yuan
Attachment:
northpac.gif
Description: GIF image
Attachment:
weird.gif
Description: GIF image
idvdevelopers archives: