Using TwoDog Inventory Software

Introduction

• TwoDog allows you analyze data on 3 levels- Point, Stand, Tract

• A point is a single location at which you collect data typically through point sampling or plot sampling.

• A stand is an area in which you collect data (ex. Size, wildlife, accessibility, forest type).

• A tract is the entire collection of stands that make up a management area.

Introduction

• To collect and analyze data you must:– Define a method set

• TwoDog Method Manager organizes method sets that can be changed for each point in order to collect appropriate data.

– Collect data following method set• Pocketdog can be used in the field to record and save data.

– Analyze data and generate reports• Once uploaded into Officedog, data can be used for various

calculations

Introduction

• Officedog can create the following reports:– Tally Outputs by Point Number

– Stand Level Tables

– Stand Level Summaries

– Stand level Topwood Summaries

– Stand Level Characteristics

– Text Data

– Tract Level Tables

– Tract Level Summaries

– Tract Level Topwood Summaries

– Tract Level Statistics

File Structure

File Structure

File Structure

Method Sets

• Two dog allows you to create method sets in which different methods can be used to record and calculate data for specific objectives.– Such as a method which involves fixed radius sampling and

another method which involves point sampling (ie. prism cruise).

• Able to store up to 9 method sets

Method Sets

Method Sets

• Primary purpose of method sets are to:– Specify inventory methods

• Prism and plot sampling

– Define species codes

– Products and product groups

– Define volume tables

• Once this method set is saved, job files can be made using them.

TwoDog Inventory Method Template

The method template contains one inventory type

• Method 1: • 10 BAF prism plot (≥ 5 inch dbh)• 1/100 acre plot (1 to < 5 inch dbh)• 1/385 acre plot (< 1 inch dbh)

Notes:• For trees between 1 to < 5 inch dbh, do not record merchantable height in logs

• For trees < 1 inch dbh, do not record merchantable height in logs and dbh

Available on the course website: FOR480_Ver4.zip To use, unzip cruise method template files into c:\tdw20\Methods

Products  

Code Product1A Grade 1 Sawtimber - AGS1U Grade 1 Sawtimber - UGS2A Grade 2 Sawtimber - AGS2U Grade 2 Sawtimber - UGS3A Grade 3 Sawtimber - AGS3U Grade 3 Sawtimber - UGS4A Below grade Sawtimber- AGS4U Below grade Sawtimber - UGS5 Cull

CA Pine sawtimber - AGSCU Pine sawtimber - UGS

PA Poletimber - AGSPU Poletimber - UGS

SA Small trees - AGSSU Small trees - UGS

R1 Seedlings < 0.5 ftR2 Seedlings 0.5 ft to 3 ftR3 Seedlings > 3 ft

Product Groups and Products

Product Groups

Code Product Group

1 Sawtimber (≥ 12 inches dbh)

2 Poletimber (5 in ≤ dbh < 12 in)

3 Small trees (1 in ≤ dbh < 5 in)

4 Advance reproduction ( < 1 in dbh)

Nested Plots

Combined Prism and Fixed Area Plot Sampling: Method 1

FOR 220 Aerial Photo Interpretation and Forest Measurements

10 BAF Prism Sample

1/100 acre plot

1/385 acre plot

Trees ≥ 5 inch dbh

Trees 1 in ≤ dbh < 5 in

Trees < 1 inch dbh

Area (ac) Area (ac) Radius(ft)1/100 0.01 11.81/385 0.0026 6

Comparing Point Sampling and Fixed Area Plot Sampling

FOR 220 Aerial Photo Interpretation and Forest Measurements

Fixed Radius Sampling Point Sampling

Sampling is based on.. Frequency of occurrence Tree size

Expansion factor Same for all trees Varies by tree

FOR 220 Aerial Photo Interpretation and Forest Measurements

Point Sampling(Overhead view)

Each tree has a given plot size in relation to it’s size.

How many of these plots does our point fall into?

Point Sampling

?

Offset tree bole in prism has no overlap with actual tree bole

Offset tree bole in prism does overlap actual tree bole

Borderline tree - mustmeasure distance frompoint center

Using a prism:

Point Sampling

Important Ideas about Point Sampling

1. Basal Area Factor (BAF)How much BA does each sampled tree represent?

2. Plot Radius FactorHow far away can a tree be and still be sampled?

Calculating basal area from a point sample:

acreft.sq.80.8 1025

202BA /

Example:

• BAF 10 prism• 202 trees tallied• 25 points

BAFpointsofnumber

talliedtreesTotalBA

FOR 220 Aerial Photo Interpretation and Forest Measurements

Plot radius factor

The value to use in determining the maximum distance a tree of a given diameter can be from the point to still be tallied.

For example, when using a BAF 10 prism, the plot radius factor is 2.75.

FOR 220 Aerial Photo Interpretation and Forest Measurements

Which means:For each inch of dbh, a tree can be 2.75 feet from the point to stillbe included in the point’s tally.

Thus a 12 inch tree can be up to 33 feet (12 x 2.75) from the point and still be included in the point’s tally.

TwoDog Data Entry

Notes:• For trees between 1 to 4 inch dbh, do not record merchantable height in logs• For trees < 1 inch dbh, do not record merchantable height in logs and dbh

Creating a New Job

Creating a New TwoDog Job File

• From the File menu, Select “Open or Create”

• Enter a filename for the new job

• Select a method set from the “Using Method Template” dropdown menu: FOR480_Ver4

• Select Create File– Window title now contains the name of the job you created, which is

now the current job

• Select Close

Opening an Existing Job

• From File menu, select “Open or Create”

• From the “Select an Existing Job” list, select the job you want to open– Your selection automatically becomes the current job

• Select Close. You are now ready to enter data.

Saving Your Work

• Office dog automatically saves your work when you change tabs on any data entry window– Tract, Stand, or Point

• Automatically saves your work when you move to a new tree or to a new point on the Tree Data Tab in the Point Data window

Entering Tract Data

• From the Field Data menu, select Tract Data

• Navigate using tabs at the top of the Tract Data window– Available tabs depend on the job’s method set

• Type data in desired text fields and/or select the appropriate choice from dropdown lists

Entering Tract Data

Entering Stand Data

• From the Field Data menu, select Stand Data

• Enter a stand ID name under the “ID” field

• Select the cruise method from the method number drop down list– Method 1: 10 BAF prism sample with fixed area small tree (1/100 ac)

and regeneration (1/385 ac) plots

• Type data in text fields and select choices from dropdown lists under desired tabs

Entering Stand Data

Changing Stands

• In the Stand Data window you can:– Edit current stand, change to another stand, or create a new stand

• To change stands: Use scroll bar at bottom of window to move to the appropriate stand

• To add a new stand: Select Add– Numbers new stands sequentially, or enter any integer not already

assigned

Entering Point Data

• At least one stand must exist before the point data window can be opened– Simply opening the stand data window automatically creates stand 1

• From the Field Data menu, select Point Data

• Entering Tree Data can be done by typing values into the cells, or choosing them from a list (right-click an empty cell)

• Entering data under the various tabs is similar to the Stand and Tract Data windows

Entering Point Data

Stand# Point# Tree# Species Product DBH MHT1 1 1 sm 4A 17 51 1 1 sm 5 16 .1 1 2 sm 1U 21 101 1 3 sm 1U 12 51 1 4 sm 1U 16 51 1 5 yp 1A 16 51 1 6 bw R1 . .1 1 7 bu R3 . .1 2 2 sm PU 7 .1 2 3 hi 2A 24 51 2 4 sm 3U 19 51 2 5 sm 4A 15 51 2 6 sm 5 17 .1 2 7 yp 3U 23 101 2 8 sm 3A 10 51 2 9 rd R0 . .1 2 10 bu R1 . .

Class Exercise: Enter the following sample data into TwoDog point data entry form

Null and Deleted Points

• Null points are points with no data that are still counted in the number of sample points– Type “.N” in the species field

• Deleted points are points that are not counted in the number of sample points and not used in calculations even though they may contain data.– Type “.D” in the species field

Entering Tree Data: Log Heights

• When entering log heights in the Tree Data table, Two Dog assumes a decimal point when it calculates the results– Ex. 15 is treated as 1.5 logs

• Two Dog automatically adds a zero to single digits added– Ex. Entering 2 will become 20 on the screen and is equal to 2.0 logs

Checking and Validating Tree Data

• Office Dog will not allow you to enter invalid data into the Tree Data table– Any invalid data entered will be cleared and a message explaining the

problem will be displayed in the message box

• Checking a point for missing data:– On the Tree Data tab select “Check”

– Office Dog checks the data for the current point against the method requirements

– Lists any problems in the message box

Changing Points and Stands

• From the Point Data window you can move to any desired point, change the stand number for a given point, and change the method for a given point

• Use the scroll bar at the bottom of the window to move between points

• To add a new point select Add– New points are numbered sequentially, you can accept or enter any

integer not already in use

Changing Points and Stands

• When Office Dog creates a new point, it assigns it to the current stand

• To change stands:– Select the appropriate stand from the Stand Number dropdown list

– Select Yes in the dialog box to confirm the change

Selecting and Changing Methods

• To change methods on any given point, select the appropriate method from the Method Number list– Select OK to confirm the change– Office Dog uses the new method for all subsequent points (until you

select a new method)

• If you change methods for a point that already has data recorded, the Inventory Method, EF/BAF, Height Units, and all product limits must be identical or your calculated results will be wrong.

• Fields not included in new methods will not appear but any data will still be saved and reappear if the methods are changed back

Calculating Reportsin OfficeDog

Calculating Reports

• From the Reports Menu, select Calculate

• Choose the appropriate calculation options by checking the boxes located in the calculate window

Calculating Reports

• Two Dog stores calculated results in a Microsoft Access data file (..\tdw20\Jobs\jobname.job\output.mdb)– Editing the *mdb file directly may prevent Two Dog from reading it

correctly

Generating Reports

• You can review reports for the current job only

• After calculating reports, select Print Reports from the Reports menu to open the Reports window– Check the box beside all stands you want to include in the report

– Under “Select Reports to Print” choose desired reports to generate by checking the boxes located in the folders (double-click to open)

– Choose whole stand or per acre to control how results are reported

Generating Reports

Generating Reports

• Choose “Print to screen first” to view reports on screen or print without viewing using “Print directly to printer” and click “Print selected reports”