1. Reference Data Standard Protocols Kamini Yadav Dr. Russ Congalton

2. Current Process Flow Chart

3. Testing Protocol on Mali data Evaluate Mali data collected in August 2015 by Murali, according to the flowchart made by Justin Large Scale, LS (>20ha) Medium Scale, MS(10-20 ha) Small Scale, SS(<10ha) Very Large Scale, VLS Very Very Large Scale, VVLS Field collected Created by Justin

4. Mali Ground Data (August 2015, Murali) Need to know/understand…… How to handle multiple crops in single sample? What does scale mean here? How does this scale help in deciding homogeneous samples at 250m/90m sample unit? What the date of the collection of crop data?

5. Steps to crosswalk the Mali data into our standard protocol format Extract the single crop samples because they conform to the homogeneity requirement due to the presence of a single crop Check the homogeneity of each sampling unit in a 250mX 250m window on Google Earth (using high resolution imagery)

6. Checking Mali data using Google Earth The images of some samples do not look like a single crop Some samples might not have crops before the growing season (left as fallow) Are the coordinates correct (are we in the right place)?

7. Issue: Proximity to Road 2014 Need to implement some automated filter on the entire dataset based on some minimum distance to the road layer All the samples near to road (within certain distance) must be flagged for evaluation or moved to the center of a field

8. April 2014 November 2013 Issue - continued

9. February 2014 VVLS?? – very, very large scale Does this mean only homogeneous crops are there so that we can move the sample inside the field and away from the road?

10. 2014 February 2015 VLS -Very Large scale?? We need to understand this scale term so that we can determine how far the samples can be moved away from the road and into the field and yet remain a homogeneous sample unit. Issue - continued

11. March2013 Includes settlement in the yellow window. This is Large scale (LS) but does not look homogeneous??? Issue - Close to settlement

12. February 2011 June 2013 Include settlements in the yellow window Question - So close to settlements may be indication of the wrong geographic coordinates?? ?

13. September 2013 January 2014 The sample includes a waterbody in 250m by 250m homogeneous window?

14. December 2013 Not homogeneous Close to the coastline

15. Photograph taken of the sample unit does not look like Maize crop as mentioned in description February 2014 December2011

16. February 2014 Homogeneity vs. Scale Large scale?? In Google Earth, the 250x250m window does not look homogeneous; Photograph seems to be of more than one crops

17. VLS…does this scene indicate homogeneity for one crop type?? Issue - homogeneity

18. Important Issues to be solved Identify the single crop sample units Decide homogeneous samples from different scale levels – very confusing Perform stratification and identify samples for each class label In addition to minimum distance between samples (spatial autocorrelation), use minimum distance to roads, settlements, and waterbodies. This analysis must be added to the flow chart.

19. Thank you Questions?