Search found 100 matches

by Jerry
Mon Oct 14, 2013 2:49 pm
Forum: i-Tree v5.x
Topic: i-Tree Suite version 5.0.9 updates available
Replies: 9
Views: 11523

OK, hold it. Those spreadsheet numbers included planting sites, and if I take them out the numbers become as follows: total sample mileage: 3.34 number of trees in sample: 172 That gives me this population estimate of trees only for the whole city: (51.4 x 172)/3.34 = 2,647 So now the new STREETS es...
by Jerry
Mon Oct 14, 2013 12:26 pm
Forum: i-Tree v5.x
Topic: i-Tree Suite version 5.0.9 updates available
Replies: 9
Views: 11523

Thanks. I knew that Streets did not calculate this way, but was just trying to get another perspective on the population question. At the population level, I believe that using 6% of the mileage in the little proportion I cited above should produce a valid estimate as well, if the initial distributi...
by Jerry
Mon Oct 14, 2013 10:16 am
Forum: i-Tree v5.x
Topic: i-Tree Suite version 5.0.9 updates available
Replies: 9
Views: 11523

To follow up on this: we originally sampled 6% of the blocksides, and got the following results: total mileage: 3.34 number of trees: 284 Since the total street line mileage using T-L files is 51.4, running the simple proportion yields 4,370 trees as an estimate for the entire city. That may be some...
by Jerry
Mon Oct 14, 2013 6:56 am
Forum: i-Tree v5.x
Topic: i-Tree Suite version 5.0.9 updates available
Replies: 9
Views: 11523

You mean that all the work I have done under contract to municipal clients over the last 7 years has been off by 25-35%?! I am going to check the Tiger-Line mileage that we sampled and do a simple proportion: sampled trees/sampled miles = total trees/total miles That should give me the ballpark figu...
by Jerry
Wed Oct 09, 2013 2:07 pm
Forum: i-Tree v5.x
Topic: i-Tree Suite version 5.0.9 updates available
Replies: 9
Views: 11523

Didn't make any difference. Guess my next move is to create a new project from the original data, huh?
by Jerry
Wed Oct 09, 2013 1:45 pm
Forum: i-Tree v5.x
Topic: i-Tree Suite version 5.0.9 updates available
Replies: 9
Views: 11523

Well this is weird! I updated today from 5.0.6 to 5.0.9, though it took me three times to get it to finish correctly. I opened Streets and confirmed that the running version was 5.0.9. Then I opened an existing sample inventory project that has run fine in every version since 2007, and it seemed to ...
by Jerry
Fri Mar 08, 2013 9:07 am
Forum: Applications and Utilities
Topic: Can we use smartphones in the field to collect data?
Replies: 5
Views: 9322

Thanks, I should have looked at the linked document. Personally, I feel more secure with a setup that caches the data on the sdcard, and use ODK Collect in a local config (without need for a server) for that reason. If anyone else wants to explore that option, I have posted directions on my website.
by Jerry
Thu Mar 07, 2013 2:25 pm
Forum: Applications and Utilities
Topic: Can we use smartphones in the field to collect data?
Replies: 5
Views: 9322

I've not looked at this yet, but does that mean the phone needs constant web connectivity?
by Jerry
Thu Jan 24, 2013 4:21 pm
Forum: New Ideas for i-Tree
Topic: Condition should seperate Biologic health from Structural!
Replies: 7
Views: 16367

Let's distinguish between the data and the report. Al and I were responding to the data side, where health and stability are clearly separated. On the report side, I asked Management ;-) once how the values for foliage and wood were handled in the software, and was told that the two values were simp...
by Jerry
Thu Jan 24, 2013 11:08 am
Forum: New Ideas for i-Tree
Topic: Condition should seperate Biologic health from Structural!
Replies: 7
Views: 16367

I am confused by your comment, since it seems to ignore the actual data structure of the software. Streets separates condition into separate fields: "Condition of Folliage" and "Condition of Wood" (see attached page from current Manual). That division is designed to distinguish between biological he...
by Jerry
Mon Nov 12, 2012 9:02 am
Forum: New Ideas for i-Tree
Topic: smart phone apps
Replies: 1
Views: 6450

Please add some explanation of what you have in mind more exactly.
by Jerry
Wed Oct 03, 2012 12:12 pm
Forum: Applications and Utilities
Topic: STREETS report generator asks to Install MS Excel
Replies: 2
Views: 7205

Do you have your file associations set up so that a file ending in *.xls or *.xlsx opens either your Excel 2000 or OO.org's Calc?
by Jerry
Fri Aug 17, 2012 9:34 am
Forum: Tips & Tricks
Topic: Crowd sourcing tree ID
Replies: 1
Views: 8301

Hi Mike --

Neat idea!

Made me wonder if the means of submission could be simplified and thereby encouraged by using a phone app such as ODK Collect on Android and ViewWorld on iOS (using same form). Just a thought.

Unfortunately, I am unable to participate from 4K miles away...

Jerry
by Jerry
Fri Jun 15, 2012 8:05 am
Forum: General Topics
Topic: I- Trees Eco Sampling at a District Scale: 92,800 Acres
Replies: 1
Views: 4571

Have you looked at the USDA Forest Service's FIA sampling protocol?

http://www.srs.fs.usda.gov/pubs/gtr/gtr ... srs080.pdf

That procedure involves intensified subplots that might offer some help for your case.

Jerry
by Jerry
Tue Dec 13, 2011 7:05 pm
Forum: General Topics
Topic: Bamboo
Replies: 17
Views: 28385

Thanks for commenting on that error and spelling out the correct approach. Old posts never die, I guess... As I said earlier, I have long found this an intriguing question. My method was aimed for a specific situation: more than one stem originating from the same root system, where the stems are be...