//VERSION=3 (auto-converted from 2)vardegToRad=Math.PI/180;functionevaluatePixelOrig(samples){varsample=samples[0];varb03_norm=normalize(sample.B03,0,0.253061520471542);varb04_norm=normalize(sample.B04,0,0.290393577911328);varb05_norm=normalize(sample.B05,0,0.305398915248555);varb06_norm=normalize(sample.B06,0.006637972542253,0.608900395797889);varb07_norm=normalize(sample.B07,0.013972727018939,0.753827384322927);varb8a_norm=normalize(sample.B8A,0.026690138082061,0.782011770669178);varb11_norm=normalize(sample.B11,0.016388074192258,0.493761397883092);varb12_norm=normalize(sample.B12,0,0.493025984460231);varviewZen_norm=normalize(Math.cos(sample.viewZenithMean*degToRad),0.918595400582046,1);varsunZen_norm=normalize(Math.cos(sample.sunZenithAngles*degToRad),0.342022871159208,0.936206429175402);varrelAzim_norm=Math.cos((sample.sunAzimuthAngles-sample.viewAzimuthMean)*degToRad)varn1=neuron1(b03_norm,b04_norm,b05_norm,b06_norm,b07_norm,b8a_norm,b11_norm,b12_norm,viewZen_norm,sunZen_norm,relAzim_norm);varn2=neuron2(b03_norm,b04_norm,b05_norm,b06_norm,b07_norm,b8a_norm,b11_norm,b12_norm,viewZen_norm,sunZen_norm,relAzim_norm);varn3=neuron3(b03_norm,b04_norm,b05_norm,b06_norm,b07_norm,b8a_norm,b11_norm,b12_norm,viewZen_norm,sunZen_norm,relAzim_norm);varn4=neuron4(b03_norm,b04_norm,b05_norm,b06_norm,b07_norm,b8a_norm,b11_norm,b12_norm,viewZen_norm,sunZen_norm,relAzim_norm);varn5=neuron5(b03_norm,b04_norm,b05_norm,b06_norm,b07_norm,b8a_norm,b11_norm,b12_norm,viewZen_norm,sunZen_norm,relAzim_norm);varl2=layer2(n1,n2,n3,n4,n5);varcab=denormalize(l2,0.007426692959872,873.908222110306);return{default:[cab/300]}}functionneuron1(b03_norm,b04_norm,b05_norm,b06_norm,b07_norm,b8a_norm,b11_norm,b12_norm,viewZen_norm,sunZen_norm,relAzim_norm){varsum=4.242299670155190+0.400396555256580*b03_norm+0.607936279259404*b04_norm+0.137468650780226*b05_norm-2.955866573461640*b06_norm-3.186746687729570*b07_norm+2.206800751246430*b8a_norm-0.313784336139636*b11_norm+0.256063547510639*b12_norm-0.071613219805105*viewZen_norm+0.510113504210111*sunZen_norm+0.142813982138661*relAzim_norm;returntansig(sum);}functionneuron2(b03_norm,b04_norm,b05_norm,b06_norm,b07_norm,b8a_norm,b11_norm,b12_norm,viewZen_norm,sunZen_norm,relAzim_norm){varsum=-0.259569088225796-0.250781102414872*b03_norm+0.439086302920381*b04_norm-1.160590937522300*b05_norm-1.861935250269610*b06_norm+0.981359868451638*b07_norm+1.634230834254840*b8a_norm-0.872527934645577*b11_norm+0.448240475035072*b12_norm+0.037078083501217*viewZen_norm+0.030044189670404*sunZen_norm+0.005956686619403*relAzim_norm;returntansig(sum);}functionneuron3(b03_norm,b04_norm,b05_norm,b06_norm,b07_norm,b8a_norm,b11_norm,b12_norm,viewZen_norm,sunZen_norm,relAzim_norm){varsum=+3.130392627338360+0.552080132568747*b03_norm-0.502919673166901*b04_norm+6.105041924966230*b05_norm-1.294386119140800*b06_norm-1.059956388352800*b07_norm-1.394092902418820*b8a_norm+0.324752732710706*b11_norm-1.758871822827680*b12_norm-0.036663679860328*viewZen_norm-0.183105291400739*sunZen_norm-0.038145312117381*relAzim_norm;returntansig(sum);}functionneuron4(b03_norm,b04_norm,b05_norm,b06_norm,b07_norm,b8a_norm,b11_norm,b12_norm,viewZen_norm,sunZen_norm,relAzim_norm){varsum=+0.774423577181620+0.211591184882422*b03_norm-0.248788896074327*b04_norm+0.887151598039092*b05_norm+1.143675895571410*b06_norm-0.753968830338323*b07_norm-1.185456953076760*b8a_norm+0.541897860471577*b11_norm-0.252685834607768*b12_norm-0.023414901078143*viewZen_norm-0.046022503549557*sunZen_norm-0.006570284080657*relAzim_norm;returntansig(sum);}functionneuron5(b03_norm,b04_norm,b05_norm,b06_norm,b07_norm,b8a_norm,b11_norm,b12_norm,viewZen_norm,sunZen_norm,relAzim_norm){varsum=+2.584276648534610+0.254790234231378*b03_norm-0.724968611431065*b04_norm+0.731872806026834*b05_norm+2.303453821021270*b06_norm-0.849907966921912*b07_norm-6.425315500537270*b8a_norm+2.238844558459030*b11_norm-0.199937574297990*b12_norm+0.097303331714567*viewZen_norm+0.334528254938326*sunZen_norm+0.113075306591838*relAzim_norm;returntansig(sum);}functionlayer2(neuron1,neuron2,neuron3,neuron4,neuron5){varsum=+0.463426463933822-0.352760040599190*neuron1-0.603407399151276*neuron2+0.135099379384275*neuron3-1.735673123851930*neuron4-0.147546813318256*neuron5;returnsum;}functionnormalize(unnormalized,min,max){return2*(unnormalized-min)/(max-min)-1;}functiondenormalize(normalized,min,max){return0.5*(normalized+1)*(max-min)+min;}functiontansig(input){return2/(1+Math.exp(-2*input))-1;}functionsetup(){return{input:[{bands:["B03","B04","B05","B06","B07","B8A","B11","B12","viewZenithMean","viewAzimuthMean","sunZenithAngles","sunAzimuthAngles"]}],output:[{id:"default",sampleType:"AUTO",bands:1}]}}functionevaluatePixel(sample,scene,metadata,customData,outputMetadata){constresult=evaluatePixelOrig([sample],[scene],metadata,customData,outputMetadata);returnresult[Object.keys(result)[0]];}
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General description of the script
Cab (leaf cholrophyll content (μg / cm ^ 2)) corresponds to the content of chlorophyll a, chlorophyll b and carotenoids per unit of leaf area. Note that the Cab script is as implemented in SNAP but without input and output validation! Input/output values which are suspect are not reported or changed. Most values, however, do not fall under this category. Visualized as an interval from 0-300. This can be adjusted in the evaluatePixel method.
Description of representative images
Leaf chlorophyl index of Rome. Acquired on 8.10.2017.