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USDA National Agricultural Statistics Service, 2023 Idaho Cropland Data Layer
STATEWIDE AGRICULTURAL ACCURACY REPORT
Crop-specific covers only *Correct Accuracy Error Kappa
------------------------- ------- -------- ------ -----
FSA Crops 417,187 82.7% 17.3% 0.803
Cover Attribute *Correct Producer's Omission User's Commission Cond'l
Type Code Pixels Accuracy Error Kappa Accuracy Error Kappa
---- ---- ------ -------- ----- ----- -------- ----- -----
Corn 1 34,584 88.2% 11.8% 0.877 89.6% 10.4% 0.892
Sorghum 4 150 63.8% 36.2% 0.638 86.2% 13.8% 0.862
Sunflower 6 148 72.2% 27.8% 0.722 65.8% 34.2% 0.658
Sweet Corn 12 200 40.4% 59.6% 0.404 54.2% 45.8% 0.542
Pop or Orn Corn 13 2 6.3% 93.8% 0.062 40.0% 60.0% 0.400
Mint 14 1,184 70.9% 29.1% 0.709 83.7% 16.3% 0.836
Barley 21 54,582 84.3% 15.7% 0.832 84.2% 15.8% 0.831
Durum Wheat 22 789 60.0% 40.0% 0.599 97.0% 3.0% 0.970
Spring Wheat 23 32,841 76.1% 23.9% 0.751 80.1% 19.9% 0.792
Winter Wheat 24 64,500 88.1% 11.9% 0.872 87.5% 12.5% 0.865
Other Small Grains 25 52 29.1% 70.9% 0.290 92.9% 7.1% 0.929
Rye 27 241 49.0% 51.0% 0.490 66.6% 33.4% 0.666
Oats 28 571 23.0% 77.0% 0.229 45.6% 54.4% 0.455
Millet 29 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Speltz 30 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Canola 31 9,461 86.5% 13.5% 0.864 93.4% 6.6% 0.933
Flaxseed 32 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Safflower 33 1,935 61.5% 38.5% 0.614 79.2% 20.8% 0.791
Rape Seed 34 0 n/a n/a n/a 0.0% 100.0% 0.000
Mustard 35 693 55.0% 45.0% 0.550 78.0% 22.0% 0.779
Alfalfa 36 104,151 89.5% 10.5% 0.881 86.7% 13.3% 0.849
Other Hay/Non Alfalfa 37 14,075 62.0% 38.0% 0.613 71.9% 28.1% 0.712
Camelina 38 53 70.7% 29.3% 0.707 65.4% 34.6% 0.654
Buckwheat 39 0 0.0% 100.0% 0.000 n/a n/a n/a
Sugarbeets 41 20,044 92.1% 7.9% 0.919 93.9% 6.1% 0.938
Dry Beans 42 3,565 76.3% 23.7% 0.762 79.2% 20.8% 0.791
Potatoes 43 37,209 93.0% 7.0% 0.927 93.1% 6.9% 0.928
Other Crops 44 195 34.8% 65.2% 0.347 73.0% 27.0% 0.730
Misc Vegs & Fruits 47 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Watermelons 48 33 46.5% 53.5% 0.465 84.6% 15.4% 0.846
Onions 49 964 84.1% 15.9% 0.841 73.3% 26.7% 0.732
Chick Peas 51 7,124 91.6% 8.4% 0.915 87.7% 12.3% 0.876
Lentils 52 1,380 71.2% 28.8% 0.712 83.4% 16.6% 0.834
Peas 53 932 55.6% 44.4% 0.555 75.0% 25.0% 0.749
Hops 56 758 81.5% 18.5% 0.815 89.6% 10.4% 0.896
Herbs 57 0 0.0% 100.0% 0.000 n/a n/a n/a
Clover/Wildflowers 58 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Sod/Grass Seed 59 3,591 74.1% 25.9% 0.740 80.3% 19.7% 0.802
Fallow/Idle Cropland 61 18,339 73.8% 26.2% 0.732 85.0% 15.0% 0.846
Cherries 66 25 25.8% 74.2% 0.258 73.5% 26.5% 0.735
Peaches 67 27 31.8% 68.2% 0.318 39.7% 60.3% 0.397
Apples 68 118 62.4% 37.6% 0.624 64.1% 35.9% 0.641
Grapes 69 3 11.1% 88.9% 0.111 18.8% 81.3% 0.187
Christmas Trees 70 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
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 5,737 93.9% 6.1% 0.939 94.5% 5.5% 0.945
Perennial Ice/Snow 112 72 48.6% 51.4% 0.486 61.5% 38.5% 0.615
Developed/Open Space 121 5,084 88.4% 11.6% 0.882 42.6% 57.4% 0.423
Developed/Low Intensity 122 3,251 98.2% 1.8% 0.982 65.9% 34.1% 0.658
Developed/Med Intensity 123 1,734 99.1% 0.9% 0.991 80.8% 19.2% 0.807
Developed/High Intensity 124 379 99.5% 0.5% 0.995 85.7% 14.3% 0.857
Barren 131 1,116 62.9% 37.1% 0.629 80.9% 19.1% 0.808
Deciduous Forest 141 1,397 43.0% 57.0% 0.428 56.9% 43.1% 0.568
Evergreen Forest 142 145,911 92.8% 7.2% 0.914 90.5% 9.5% 0.887
Mixed Forest 143 40 4.9% 95.1% 0.049 24.0% 76.0% 0.239
Shrubland 152 199,019 89.9% 10.1% 0.869 87.3% 12.7% 0.835
Grassland/Pasture 176 55,851 80.9% 19.1% 0.795 82.3% 17.7% 0.809
Woody Wetlands 190 1,144 33.4% 66.6% 0.333 54.3% 45.7% 0.541
Herbaceous Wetlands 195 2,324 52.6% 47.4% 0.524 61.0% 39.0% 0.608
Triticale 205 1,574 34.2% 65.8% 0.340 61.5% 38.5% 0.613
Carrots 206 29 34.5% 65.5% 0.345 26.1% 73.9% 0.261
Peppers 216 5 50.0% 50.0% 0.500 83.3% 16.7% 0.833
Nectarines 218 0 0.0% 100.0% 0.000 n/a n/a n/a
Greens 219 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Plums 220 1 3.2% 96.8% 0.032 9.1% 90.9% 0.091
Squash 222 0 0.0% 100.0% 0.000 n/a n/a n/a
Dbl Crop WinWht/Corn 225 7 100.0% 0.0% 1.000 10.1% 89.9% 0.101
Lettuce 227 30 28.8% 71.2% 0.288 71.4% 28.6% 0.714
Dbl Crop Triticale/Corn 228 924 44.8% 55.2% 0.447 66.8% 33.2% 0.667
Pumpkins 229 0 0.0% 100.0% 0.000 0.0% 100.0% 0.000
Dbl Crop Barley/Corn 237 24 16.9% 83.1% 0.169 88.9% 11.1% 0.889
Radishes 246 58 43.3% 56.7% 0.433 96.7% 3.3% 0.967
Turnips 247 16 66.7% 33.3% 0.667 48.5% 51.5% 0.485
*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.