How to retain the duplicate data while making contour plots using scatterinterpolant?

I am working with a .csv data which have duplicate values. when i am interpolating those data to prepare a contour plot between date (x-axis), time (y-axis) and values at z-axis. I am getting this - Warning: Duplicate data points have been detected and removed - corresponding values have been averaged. I want to retain the duplicate values rather to remove it. please help me out.

[KSSV]

Why you want to retain the duplicate data? It is a good practice not to keep the duplicates.

[Walter Roberson]

If one of the copies says the input value 4 value corresponds to output 7 and another says it corresponds to 3, then what value should be output if 4 is input? 3? 7? 5? Both 3 and 7?

[shravani banerjee]

i think it will be both 3 and 7.

[shravani banerjee]

@KSSV when i am plotting the data then the plot shows 0 values in the areas where there is some values other than 0 (especially after 18th dec in the data). So I think it is interpolating in such a way that those values are also removed or replaced by 0. therefore i want to keep the duplicates.

[Walter Roberson]

The defined interpolation routines never return the set of all possible solutions implied by duplicate coefficients.

[jonas]

Related Q with more details

https://se.mathworks.com/matlabcentral/answers/421064-make-a-contour-plot-with-dates-on-x-axis-time-on-y-axis-and-fog-concentration-as-z-values

@shravani: It is OK to ask follow-up questions in the same thread even after accepting an answer. Often times it is better, because the person who answered is already familiar with your data.