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 ...

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 ...

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 ...

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 ...

Didn't make any difference. Guess my next move is to create a new project from the original data, huh?

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 ...

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 ...

I've not looked at this yet, but does that mean the phone needs constant web connectivity?

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 ...

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 ...

Please add some explanation of what you have in mind more exactly.

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?

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

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

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 ...