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USDA National Agricultural Statistics Service, 2023 Oregon Cropland Data Layer
STATEWIDE AGRICULTURAL ACCURACY REPORT
Crop-specific covers only *Correct Accuracy Error Kappa
------------------------- ------- -------- ------ -----
FSA Crops 385,408 84.5% 15.5% 0.810
Cover Attribute *Correct Producer's Omission User's Commission Cond'l
Type Code Pixels Accuracy Error Kappa Accuracy Error Kappa
---- ---- ------ -------- ----- ----- -------- ----- -----
Corn 1 11,670 85.0% 15.0% 0.848 82.8% 17.2% 0.825
Sorghum 4 0 n/a n/a n/a 0.0% 100.0% 0.000
Soybeans 5 0 0.0% 100.0% 0.000 n/a n/a n/a
Sunflower 6 97 24.7% 75.3% 0.247 28.3% 71.7% 0.283
Sweet Corn 12 389 50.7% 49.3% 0.507 65.4% 34.6% 0.654
Pop or Orn Corn 13 0 n/a n/a n/a 0.0% 100.0% 0.000
Mint 14 1,723 69.1% 30.9% 0.690 86.2% 13.8% 0.862
Barley 21 2,282 39.3% 60.7% 0.391 63.1% 36.9% 0.629
Spring Wheat 23 6,116 59.7% 40.3% 0.593 64.6% 35.4% 0.642
Winter Wheat 24 128,125 94.8% 5.2% 0.939 94.6% 5.4% 0.938
Rye 27 169 32.2% 67.8% 0.322 50.4% 49.6% 0.504
Oats 28 578 30.1% 69.9% 0.300 57.6% 42.4% 0.575
Millet 29 0 0.0% 100.0% 0.000 n/a n/a n/a
Canola 31 737 51.2% 48.8% 0.511 85.7% 14.3% 0.857
Flaxseed 32 0 n/a n/a n/a 0.0% 100.0% 0.000
Mustard 35 43 15.8% 84.2% 0.157 32.1% 67.9% 0.321
Alfalfa 36 44,392 86.3% 13.7% 0.855 80.1% 19.9% 0.790
Other Hay/Non Alfalfa 37 14,066 57.4% 42.6% 0.565 71.1% 28.9% 0.703
Camelina 38 88 33.6% 66.4% 0.336 50.9% 49.1% 0.509
Buckwheat 39 4 12.5% 87.5% 0.125 18.2% 81.8% 0.182
Sugarbeets 41 1,506 79.1% 20.9% 0.791 83.9% 16.1% 0.839
Dry Beans 42 506 48.2% 51.8% 0.481 56.0% 44.0% 0.560
Potatoes 43 5,958 79.3% 20.7% 0.792 90.8% 9.2% 0.907
Other Crops 44 512 35.6% 64.4% 0.356 71.2% 28.8% 0.712
Misc Vegs & Fruits 47 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Watermelons 48 4 8.7% 91.3% 0.087 18.2% 81.8% 0.182
Onions 49 2,793 80.6% 19.4% 0.805 82.5% 17.5% 0.824
Chick Peas 51 303 81.0% 19.0% 0.810 68.9% 31.1% 0.689
Lentils 52 20 45.5% 54.5% 0.455 80.0% 20.0% 0.800
Peas 53 2,532 79.6% 20.4% 0.795 87.4% 12.6% 0.874
Hops 56 630 84.5% 15.5% 0.844 90.0% 10.0% 0.900
Herbs 57 5 2.4% 97.6% 0.024 3.9% 96.1% 0.039
Clover/Wildflowers 58 2,462 63.2% 36.8% 0.631 71.3% 28.7% 0.712
Sod/Grass Seed 59 30,485 85.7% 14.3% 0.851 84.5% 15.5% 0.839
Fallow/Idle Cropland 61 117,633 93.6% 6.4% 0.927 96.4% 3.6% 0.959
Cherries 66 1,604 83.0% 17.0% 0.829 86.1% 13.9% 0.861
Peaches 67 1 5.3% 94.7% 0.053 25.0% 75.0% 0.250
Apples 68 99 32.9% 67.1% 0.329 68.8% 31.3% 0.687
Grapes 69 185 35.0% 65.0% 0.350 72.5% 27.5% 0.725
Christmas Trees 70 36 22.5% 77.5% 0.225 66.7% 33.3% 0.667
Other Tree Crops 71 3,670 75.9% 24.1% 0.758 86.0% 14.0% 0.859
Walnuts 76 1 14.3% 85.7% 0.143 20.0% 80.0% 0.200
Pears 77 1,009 81.7% 18.3% 0.817 85.2% 14.8% 0.852
Open Water 111 6,189 93.1% 6.9% 0.930 93.4% 6.6% 0.934
Perennial Ice/Snow 112 57 71.3% 28.8% 0.712 89.1% 10.9% 0.891
Developed/Open Space 121 8,008 85.0% 15.0% 0.848 60.2% 39.8% 0.599
Developed/Low Intensity 122 4,318 96.3% 3.7% 0.962 71.0% 29.0% 0.709
Developed/Med Intensity 123 2,992 98.7% 1.3% 0.987 87.0% 13.0% 0.870
Developed/High Intensity 124 1,136 98.9% 1.1% 0.989 96.7% 3.3% 0.967
Barren 131 2,451 77.9% 22.1% 0.778 85.3% 14.7% 0.853
Deciduous Forest 141 287 18.2% 81.8% 0.181 38.7% 61.3% 0.386
Evergreen Forest 142 184,303 94.0% 6.0% 0.924 89.5% 10.5% 0.869
Mixed Forest 143 6,123 44.8% 55.2% 0.442 56.3% 43.7% 0.557
Shrubland 152 175,375 89.6% 10.4% 0.869 88.9% 11.1% 0.861
Grassland/Pasture 176 65,900 80.8% 19.2% 0.790 77.0% 23.0% 0.750
Woody Wetlands 190 919 24.0% 76.0% 0.238 43.1% 56.9% 0.429
Herbaceous Wetlands 195 4,980 62.2% 37.8% 0.619 61.9% 38.1% 0.616
Triticale 205 521 22.9% 77.1% 0.228 41.4% 58.6% 0.412
Carrots 206 93 25.0% 75.0% 0.250 44.1% 55.9% 0.441
Garlic 208 9 5.0% 95.0% 0.050 40.9% 59.1% 0.409
Cantaloupes 209 0 0.0% 100.0% 0.000 n/a n/a n/a
Broccoli 214 0 0.0% 100.0% 0.000 n/a n/a n/a
Peppers 216 0 n/a n/a n/a 0.0% 100.0% 0.000
Greens 219 1 1.7% 98.3% 0.017 3.7% 96.3% 0.037
Plums 220 21 52.5% 47.5% 0.525 43.8% 56.3% 0.437
Strawberries 221 16 44.4% 55.6% 0.444 61.5% 38.5% 0.615
Squash 222 80 71.4% 28.6% 0.714 51.9% 48.1% 0.519
Vetch 224 32 16.3% 83.7% 0.163 76.2% 23.8% 0.762
Dbl Crop WinWht/Corn 225 29 28.2% 71.8% 0.282 64.4% 35.6% 0.644
Lettuce 227 0 n/a n/a n/a 0.0% 100.0% 0.000
Dbl Crop Triticale/Corn 228 1,607 79.2% 20.8% 0.792 89.3% 10.7% 0.893
Pumpkins 229 69 60.0% 40.0% 0.600 97.2% 2.8% 0.972
Dbl Crop WinWht/Sorghum 236 0 n/a n/a n/a 0.0% 100.0% 0.000
Dbl Crop Barley/Corn 237 0 0.0% 100.0% 0.000 n/a n/a n/a
Blueberries 242 372 76.7% 23.3% 0.767 90.1% 9.9% 0.901
Cabbage 243 1 5.6% 94.4% 0.056 50.0% 50.0% 0.500
Cauliflower 244 1 2.3% 97.7% 0.023 11.1% 88.9% 0.111
Radishes 246 16 3.5% 96.5% 0.035 32.7% 67.3% 0.326
Turnips 247 83 53.2% 46.8% 0.532 74.8% 25.2% 0.748
Gourds 249 24 43.6% 56.4% 0.436 75.0% 25.0% 0.750
*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.