Fig. 8 | Scientific Reports

Fig. 8

From: High precision water quality retrieval in Dianchi Lake using Gaofen 5 data and machine learning methods

Fig. 8

Correlation diagram of 25 SCV. The black line represents the correlation between pH and the SCV obtained from preprocessed spectra. The red line represents the correlation between CODcr and the SCV obtained from preprocessed spectra. The blue line represents the correlation between TP and the SCV obtained from preprocessed spectra. The orange line represents the correlation between NH3-N and the SCV obtained from preprocessed spectra. The purple line represents the correlation between TN and the SCV obtained from preprocessed spectra. The green line represents the correlation between Chl and the SCV obtained from preprocessed spectra. Values above the solid line indicate a strong correlation between the band and the WQI. Values above the dashed line indicate a stronger correlation between the band and the WQI.

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