Zhanchao Shao

7 Questions 3 Answers 0 Followers

Questions related from Zhanchao Shao

Does grain size have a correlation with their colours?

Among gravel, sands, silt and clay, these grains have different sizes. Except their original materials, do they appear different colours due to different abilities of reflection?

11 November 2019 9,429 4 View

Recommendation on data correction?

Hi guys. I worked out a formula: λ=f(x)=a+(b-a)/(1+exp(k(x50-x))) x is the dependent variance while k is uncertain depending on water quality Now i would like to do data correction on my estimated...

10 October 2019 7,185 6 View

How to calibrate or adjust the estimated data with observed data?

Hi guys, I developed a model (based on logistic function). I calculated the estimated data but I would like to calibrate these with observed data so that I can improve the model. How can I use...

10 October 2019 9,950 3 View

Is it possible to convert the DN value of a Sentinel 2 imagery to a matrix?

Hi, I would like to process my data in Matlab (I have to process them in Matlab). Is it possible to convert the DN value (band 2) of a sentinel 2 imagery to a matrix, which means each cell...

09 September 2019 6,887 4 View

How to multiply import csv file to matlab and save them as an array or matrix?

Hi guys! I have tried to import serveral csv files to matlab using csvread. However, the csv file are named after the random dates. So how can i import them into matlab with loops The file names...

08 August 2019 6,890 3 View

How plot the scatters and curves in the same graph in Matlab?

Hi guys. I wanna combine the scatters and curves in the same graph. However, I used spline function in curves. The graph twisted a lot. The expected graph is the...

08 August 2019 8,198 1 View

Regression assumption tests. Are these residuals heteroscadastic or homoscadastic?

Can these residuals be regarded heteroscadastic? I have tested the residuals are normally distributed.

05 May 2019 4,231 5 View