R G OderwaldYour time, your place.
All courses free for students in an SAF accredited cirriculum.
Send Institution, Semester, Course Name, Instructor and emails of enrolled students. I will send an enrollment code good for the semester. Contact rgofbed@gmail.com
Why do we do so many plots when we already know the answer? Use what you know.
Using Prior Information in Forset Inventory. Try it here first. Download Excel file "BayesToGo.xlsm" Click to Download
More limited macro free version Click to Download
Course Outline and Access below.
Articles
An Unexpected Connection Between Stocking Guides and Reineke's Stand Density Index
No Fixed Top Diameter: Form Class Volume Tables Aren't What We Think They Are
How much does accuracy change with a change in sample size? Continue reading
I can't do that many plots. What happens to my accuracy? Continue reading
Why do we still have the Doyle log rule? Continue reading
Online Courses. SAF CFE credits
Free Preview for All Courses
Point Sampling
Point sampling is better than plot sampling for estimating volume in the vast majority of forest stands. If you can do a plot, you can do a point. The equipment, the plot layout, and, the volume tables are the same. Basal area, volume, stand and stock table, and sample size calculations, are not complicated and can be done in any spreadsheet. Manual Included
Course Outline Register
Point-Double Sampling
Point-double sampling is the best way to estimate volume. Sampling time can be reduced by at least one-third compared to regular point sampling without losing accuracy. Manual Included
Course Outline Register
Statistics for Forest Inventory
Statistics is essential for analyzing forest inventories. The way we collect data as we go is an advantage few others have. We can watch our answers become our answers and decide when we've done enough. Manual Included
Course Outline Register
Using Prior Information in Forest Inventory
Why do we pretend we've never seen a tree before. Why don't we use what we know about volume to increase accuracy and save time. This course shows how we can use our knowledge and experience in cruises. Manual Included (no CFE credits)
Course Outline Register
Multiple Products with Point Double Sampling
Forest inventories today must consider more products than ever
before. A point double sample concentrates volume measurements on fewer points
where more time can be spent assessing potential tree products. Products per
tree can be based on one called product per tree with ratios for other
products or multiple called products per tree.
Products can be recalculated after the inventory if taper equations are used rather than fixed products.
Course Outline Register
Add Basal Area Points to Increase Accuracy
Have you come up short on required accuracy? Basal area points can be added to an existing cruise to improve accuracy with little extra cost.
Course Outline Register
Betting on the Confidence Interval
Foresters routinely bet more money than any other profession. Without knowing the odds you are betting blind. Confidence intervals provide the odds to assess your bets.
Course Outline Register
Instruction Manuals
Downloadable Instruction Manuals for purchase. Manuals are $20 each.
Point Sampling TOC Purchase
Point Double Sampling TOC Purchase
Statistics for Forest Inventory TOC Purchase
Using Prior Information in Forest Inventories TOC Purchase
Contact Information
Articles
An Unexpected Connection Between Stocking Guides and Reineke's Stand Density Index
No Fixed Top Diameter: Form Class Volume Tables Aren't What We Think They Are
How much does accuracy change with a change in sample size? Continue reading
I can't do that many plots. What happens to my accuracy? Continue reading
Why do we still have the Doyle log rule? Continue reading
Online Courses. SAF CFE credits
Free Preview for All Courses
Point Sampling
Point sampling is better than plot sampling for estimating volume in the vast majority of forest stands. If you can do a plot, you can do a point. The equipment, the plot layout, and, the volume tables are the same. Basal area, volume, stand and stock table, and sample size calculations, are not complicated and can be done in any spreadsheet. Manual Included
Course Outline Register
Point-Double Sampling
Point-double sampling is the best way to estimate volume. Sampling time can be reduced by at least one-third compared to regular point sampling without losing accuracy. Manual Included
Course Outline Register
Statistics for Forest Inventory
Statistics is essential for analyzing forest inventories. The way we collect data as we go is an advantage few others have. We can watch our answers become our answers and decide when we've done enough. Manual Included
Course Outline Register
Using Prior Information in Forest Inventory
Why do we pretend we've never seen a tree before. Why don't we use what we know about volume to increase accuracy and save time. This course shows how we can use our knowledge and experience in cruises. Manual Included (no CFE credits)
Course Outline Register
Multiple Products with Point Double Sampling
Forest inventories today must consider more products than ever
before. A point double sample concentrates volume measurements on fewer points
where more time can be spent assessing potential tree products. Products per
tree can be based on one called product per tree with ratios for other
products or multiple called products per tree.
Products can be recalculated after the inventory if taper equations are used rather than fixed products.
Course Outline Register
Add Basal Area Points to Increase Accuracy
Have you come up short on required accuracy? Basal area points can be added to an existing cruise to improve accuracy with little extra cost.
Course Outline Register
Betting on the Confidence Interval
Foresters routinely bet more money than any other profession. Without knowing the odds you are betting blind. Confidence intervals provide the odds to assess your bets.
Course Outline Register
Instruction Manuals
Downloadable Instruction Manuals for purchase. Manuals are $20 each.
Point Sampling TOC Purchase
Point Double Sampling TOC Purchase
Statistics for Forest Inventory TOC Purchase
Using Prior Information in Forest Inventories TOC Purchase
Contact Information
email: rgofbed@gmail.com
Richard G. Oderwald
605 Watson Lane
Blacksburg, VA 24060