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USDA National Agricultural Statistics Service, 2023 Colorado Cropland Data Layer
STATEWIDE AGRICULTURAL ACCURACY REPORT
Crop-specific covers only *Correct Accuracy Error Kappa
------------------------- ------- -------- ------ -----
FSA Crops 407,090 79.6% 20.4% 0.752
Cover Attribute *Correct Producer's Omission User's Commission Cond'l
Type Code Pixels Accuracy Error Kappa Accuracy Error Kappa
---- ---- ------ -------- ----- ----- -------- ----- -----
Corn 1 105,279 89.1% 10.9% 0.881 87.4% 12.6% 0.863
Sorghum 4 22,990 64.5% 35.5% 0.637 71.7% 28.3% 0.710
Soybeans 5 36 12.9% 87.1% 0.129 67.9% 32.1% 0.679
Sunflower 6 352 19.6% 80.4% 0.196 60.2% 39.8% 0.601
Sweet Corn 12 104 50.5% 49.5% 0.505 55.3% 44.7% 0.553
Pop or Orn Corn 13 0 0.0% 100.0% 0.000 n/a n/a n/a
Barley 21 1,483 60.9% 39.1% 0.608 67.7% 32.3% 0.677
Spring Wheat 23 98 34.3% 65.7% 0.343 43.0% 57.0% 0.430
Winter Wheat 24 106,343 88.7% 11.3% 0.877 87.0% 13.0% 0.859
Rye 27 139 9.5% 90.5% 0.095 37.1% 62.9% 0.370
Oats 28 1,026 30.8% 69.2% 0.307 53.2% 46.8% 0.531
Millet 29 19,885 73.5% 26.5% 0.730 77.0% 23.0% 0.766
Speltz 30 6 75.0% 25.0% 0.750 26.1% 73.9% 0.261
Canola 31 1 0.8% 99.2% 0.008 1.4% 98.6% 0.014
Safflower 33 707 54.0% 46.0% 0.540 62.1% 37.9% 0.621
Alfalfa 36 37,812 85.5% 14.5% 0.850 79.1% 20.9% 0.785
Other Hay/Non Alfalfa 37 6,608 49.8% 50.2% 0.494 58.0% 42.0% 0.576
Camelina 38 96 18.5% 81.5% 0.185 86.5% 13.5% 0.865
Sugarbeets 41 692 62.9% 37.1% 0.628 90.2% 9.8% 0.902
Dry Beans 42 805 59.4% 40.6% 0.593 70.2% 29.8% 0.702
Potatoes 43 1,088 79.6% 20.4% 0.796 84.7% 15.3% 0.847
Other Crops 44 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Misc Vegs & Fruits 47 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Watermelons 48 0 n/a n/a n/a 0.0% 100.0% 0.000
Onions 49 16 8.5% 91.5% 0.085 35.6% 64.4% 0.355
Chick Peas 51 0 n/a n/a n/a 0.0% 100.0% 0.000
Peas 53 234 26.3% 73.7% 0.262 81.8% 18.2% 0.818
Hops 56 0 n/a n/a n/a 0.0% 100.0% 0.000
Sod/Grass Seed 59 38 33.9% 66.1% 0.339 28.8% 71.2% 0.288
Switchgrass 60 0 0.0% 100.0% 0.000 n/a n/a n/a
Fallow/Idle Cropland 61 99,411 85.4% 14.6% 0.842 84.9% 15.1% 0.837
Cherries 66 5 14.3% 85.7% 0.143 41.7% 58.3% 0.417
Peaches 67 100 50.5% 49.5% 0.505 87.7% 12.3% 0.877
Apples 68 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Grapes 69 15 30.0% 70.0% 0.300 50.0% 50.0% 0.500
Other Tree Crops 71 0 0.0% 100.0% 0.000 n/a n/a n/a
Pears 77 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Open Water 111 3,939 84.9% 15.1% 0.848 90.3% 9.7% 0.903
Perennial Ice/Snow 112 351 34.3% 65.7% 0.342 54.5% 45.5% 0.545
Developed/Open Space 121 15,027 87.5% 12.5% 0.873 66.5% 33.5% 0.661
Developed/Low Intensity 122 8,529 96.1% 3.9% 0.961 88.3% 11.7% 0.882
Developed/Med Intensity 123 6,190 98.9% 1.1% 0.989 96.2% 3.8% 0.962
Developed/High Intensity 124 2,022 99.4% 0.6% 0.994 98.2% 1.8% 0.982
Barren 131 7,555 86.2% 13.8% 0.861 86.8% 13.2% 0.867
Deciduous Forest 141 61,863 80.7% 19.3% 0.797 79.4% 20.6% 0.783
Evergreen Forest 142 221,248 91.7% 8.3% 0.900 88.2% 11.8% 0.859
Mixed Forest 143 3,086 31.9% 68.1% 0.316 55.1% 44.9% 0.548
Shrubland 152 265,222 89.2% 10.8% 0.865 88.5% 11.5% 0.856
Grassland/Pasture 176 260,326 92.4% 7.6% 0.907 92.3% 7.7% 0.905
Woody Wetlands 190 3,408 31.1% 68.9% 0.308 47.7% 52.3% 0.473
Herbaceous Wetlands 195 5,282 42.1% 57.9% 0.417 53.0% 47.0% 0.526
Triticale 205 1,396 22.4% 77.6% 0.222 48.9% 51.1% 0.487
Carrots 206 0 n/a n/a n/a 0.0% 100.0% 0.000
Cantaloupes 209 0 0.0% 100.0% 0.000 n/a n/a n/a
Peppers 216 0 0.0% 100.0% 0.000 n/a n/a n/a
Nectarines 218 0 0.0% 100.0% 0.000 n/a n/a n/a
Squash 222 0 0.0% 100.0% 0.000 n/a n/a n/a
Vetch 224 0 0.0% 100.0% 0.000 n/a n/a n/a
Dbl Crop WinWht/Corn 225 2 0.5% 99.5% 0.005 66.7% 33.3% 0.667
Dbl Crop Oats/Corn 226 33 45.8% 54.2% 0.458 100.0% 0.0% 1.000
Dbl Crop Triticale/Corn 228 2 0.5% 99.5% 0.005 1.1% 98.9% 0.010
Pumpkins 229 39 38.2% 61.8% 0.382 48.8% 51.3% 0.487
Dbl Crop WinWht/Sorghum 236 249 29.9% 70.1% 0.298 53.3% 46.7% 0.533
Cabbage 243 0 0.0% 100.0% 0.000 n/a n/a n/a
*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.