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USDA National Agricultural Statistics Service, 2023 Oklahoma Cropland Data Layer
STATEWIDE AGRICULTURAL ACCURACY REPORT
Crop-specific covers only *Correct Accuracy Error Kappa
------------------------- ------- -------- ------ -----
FSA Crops 413,133 74.0% 26.0% 0.662
Cover Attribute *Correct Producer's Omission User's Commission Cond'l
Type Code Pixels Accuracy Error Kappa Accuracy Error Kappa
---- ---- ------ -------- ----- ----- -------- ----- -----
Corn 1 32,111 85.3% 14.7% 0.847 89.7% 10.3% 0.893
Cotton 2 33,252 81.0% 19.0% 0.801 81.0% 19.0% 0.802
Sorghum 4 34,699 68.1% 31.9% 0.665 73.4% 26.6% 0.720
Soybeans 5 22,682 72.3% 27.7% 0.715 76.4% 23.6% 0.757
Sunflower 6 29 5.8% 94.2% 0.058 61.7% 38.3% 0.617
Peanuts 10 695 55.9% 44.1% 0.558 74.9% 25.1% 0.749
Sweet Corn 12 8 53.3% 46.7% 0.533 100.0% 0.0% 1.000
Barley 21 1,265 49.7% 50.3% 0.496 82.5% 17.5% 0.824
Spring Wheat 23 24 14.0% 86.0% 0.140 100.0% 0.0% 1.000
Winter Wheat 24 214,907 88.9% 11.1% 0.849 82.0% 18.0% 0.761
Dbl Crop WinWht/Soybeans 26 17,113 74.6% 25.4% 0.740 76.9% 23.1% 0.763
Rye 27 8,192 56.6% 43.4% 0.561 66.5% 33.5% 0.660
Oats 28 3,612 38.0% 62.0% 0.377 67.0% 33.0% 0.667
Millet 29 117 14.0% 86.0% 0.140 30.2% 69.8% 0.301
Canola 31 37 22.7% 77.3% 0.227 97.4% 2.6% 0.974
Alfalfa 36 10,606 74.5% 25.5% 0.741 82.1% 17.9% 0.819
Other Hay/Non Alfalfa 37 9,669 40.6% 59.4% 0.397 65.0% 35.0% 0.642
Camelina 38 72 86.7% 13.3% 0.867 100.0% 0.0% 1.000
Dry Beans 42 59 27.3% 72.7% 0.273 65.6% 34.4% 0.655
Other Crops 44 34 10.4% 89.6% 0.104 35.1% 64.9% 0.350
Misc Vegs & Fruits 47 0 0.0% 100.0% 0.000 n/a n/a n/a
Watermelons 48 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Peas 53 233 35.8% 64.2% 0.358 83.5% 16.5% 0.835
Herbs 57 343 34.7% 65.3% 0.347 76.2% 23.8% 0.762
Clover/Wildflowers 58 0 0.0% 100.0% 0.000 n/a n/a n/a
Sod/Grass Seed 59 1,937 71.8% 28.2% 0.717 84.5% 15.5% 0.844
Fallow/Idle Cropland 61 13,211 54.0% 46.0% 0.531 71.6% 28.4% 0.708
Peaches 67 7 35.0% 65.0% 0.350 70.0% 30.0% 0.700
Apples 68 0 0.0% 100.0% 0.000 n/a n/a n/a
Grapes 69 0 0.0% 100.0% 0.000 n/a n/a n/a
Christmas Trees 70 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Pecans 74 361 28.8% 71.2% 0.288 61.8% 38.2% 0.618
Open Water 111 10,521 91.7% 8.3% 0.916 90.7% 9.3% 0.905
Developed/Open Space 121 18,597 99.7% 0.3% 0.997 72.6% 27.4% 0.721
Developed/Low Intensity 122 8,040 100.0% 0.0% 1.000 86.3% 13.7% 0.862
Developed/Med Intensity 123 5,351 99.9% 0.1% 0.999 89.4% 10.6% 0.894
Developed/High Intensity 124 1,796 100.0% 0.0% 1.000 96.6% 3.4% 0.966
Barren 131 581 47.6% 52.4% 0.476 63.1% 36.9% 0.630
Deciduous Forest 141 90,752 90.9% 9.1% 0.898 85.1% 14.9% 0.834
Evergreen Forest 142 15,538 78.6% 21.4% 0.781 78.5% 21.5% 0.781
Mixed Forest 143 7,247 52.0% 48.0% 0.514 58.0% 42.0% 0.574
Shrubland 152 26,008 69.1% 30.9% 0.680 76.7% 23.3% 0.758
Grassland/Pasture 176 191,095 92.8% 7.2% 0.907 84.6% 15.4% 0.805
Woody Wetlands 190 1,930 39.5% 60.5% 0.393 53.2% 46.8% 0.530
Herbaceous Wetlands 195 295 15.6% 84.4% 0.155 31.3% 68.8% 0.311
Triticale 205 3,373 32.7% 67.3% 0.323 63.0% 37.0% 0.626
Vetch 224 10 58.8% 41.2% 0.588 83.3% 16.7% 0.833
Dbl Crop WinWht/Corn 225 881 34.1% 65.9% 0.340 58.3% 41.7% 0.582
Dbl Crop Triticale/Corn 228 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Pumpkins 229 0 0.0% 100.0% 0.000 n/a n/a n/a
Dbl Crop WinWht/Sorghum 236 2,293 27.1% 72.9% 0.268 55.5% 44.5% 0.551
Dbl Crop Barley/Corn 237 0 n/a n/a n/a 0.0% 100.0% 0.000
Dbl Crop WinWht/Cotton 238 1,272 31.0% 69.0% 0.309 70.6% 29.4% 0.705
Dbl Crop Soybeans/Oats 240 29 9.6% 90.4% 0.096 46.0% 54.0% 0.460
Dbl Crop Corn/Soybeans 241 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Dbl Crop Barley/Soybeans 254 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
*Correct Pixels represents the total number of independent validation pixels correctly identified in the error matrix.
**The Overall Accuracy represents only the FSA row crops and annual fruit and vegetables (codes 1-61, 66-80, 92 and 200-255).
FSA-sampled grass and pasture. Non-agricultural and NLCD-sampled categories (codes 62-65, 81-91 and 93-199) are not included in the Overall Accuracy.
The accuracy of the non-agricultural land cover classes within the Cropland Data Layer is entirely dependent upon the USGS, National Land Cover Database. Thus, the USDA NASS recommends that users consider the NLCD for studies involving non-agricultural land cover. For more information on the accuracy of the NLCD please reference <https://www.mrlc.gov/>.
Attribute_Accuracy_Value:
Classification accuracy is generally 85% to 95% correct for the major crop-specific land cover categories. See the 'Attribute Accuracy Report' section of this metadata file for the detailed accuracy report.
Attribute_Accuracy_Explanation:
The strength and emphasis of the CDL is crop-specific land cover categories. The accuracy of the CDL non-agricultural land cover classes is entirely dependent upon the USGS, National Land Cover Database. Thus, the USDA NASS recommends that users consider the NLCD for studies involving non-agricultural land cover.
These definitions of accuracy statistics were derived from the following book: Congalton, Russell G. and Kass Green. Assessing the Accuracy of Remotely Sensed Data: Principles and Practices. Boca Raton, Florida: CRC Press, Inc. 1999. The 'Producer's Accuracy' is calculated for each cover type in the ground truth and indicates the probability that a ground truth pixel will be correctly mapped (across all cover types) and measures 'errors of omission'. An 'Omission Error' occurs when a pixel is excluded from the category to which it belongs in the validation dataset. The 'User's Accuracy' indicates the probability that a pixel from the CDL classification actually matches the ground truth data and measures 'errors of commission'. The 'Commission Error' represent when a pixel is included in an incorrect category according to the validation data. It is important to take into consideration errors of omission and commission. For example, if you classify every pixel in a scene to 'wheat', then you have 100% Producer's Accuracy for the wheat category and 0% Omission Error. However, you would also have a very high error of commission as all other crop types would be included in the incorrect category. The 'Kappa' is a measure of agreement based on the difference between the actual agreement in the error matrix (i.e., the agreement between the remotely sensed classification and the reference data as indicated by the major diagonal) and the chance agreement which is indicated by the row and column totals. The 'Conditional Kappa Coefficient' is the agreement for an individual category within the entire error matrix.