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统计学

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Why prediction of NIR spectral train and test datasets different when use PLSREGRESS
Hi, I am using NIR data to build a model. I split the datasets into the train(80%) and test (20%). Then I used the training dat...

4 years 前 | 0 个回答 | 0

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3D scatter plot profile along line
Hi,I want to plot a profile along line of 3D scatter plot where X is X cordinate and Y is Y cordinate and Z is the height. The p...

5 years 前 | 0 个回答 | 0

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How can I run a median/low-pass filter over a Digital elevation model data in XYZ format
Hi, I want to run a median/low-pass filter (over several hunders kilometers) over a Digital Elevation Model data which in XYZ f...

5 years 前 | 1 个回答 | 0

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How can I draw the contour/rectangle on the plot?
Hi, I have grid files a and b both have 23*15 size. I wanna plot b over a to show the boundary of the b data. I wrote below c...

6 years 前 | 0 个回答 | 0

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Defining confidence interval for reduced chi-square test?
Hi, I have observed data and predicated data from different models.I did the reduced chi-square test between the observed and...

6 years 前 | 0 个回答 | 0

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detrending data using linear regression
Hi, I wanna detrend my data using linear regression. I don't wanna use the 'detrend' function of matlab. Can anyone help m...

6 years 前 | 1 个回答 | 0

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Calculate the velocity from acceleration
Hi, I want to calculate the velocity for year 2013,2014,2015 and 2016 from the rate given for 2013-2016 m/year. %accelerat...

7 years 前 | 0 个回答 | 0

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Compare GIS observation data with model
Hi, I want to compare my GIS observation (1500*1) data with model (1500*1) by plotting residuals of that. Please tell me how ...

7 years 前 | 1 个回答 | 0

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Plot selected data of the time-series
Hi, I have 3D data set x,y and z. z is the 200*17 matrix where each column represents a year (2000-2017). z values are corres...

7 years 前 | 1 个回答 | 0

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Finding neighbour values average of the 2d data set
Hi, I have a 2D data sets where x is distance and y is velocity. I want to take average of the y neighbour values based on on...

7 years 前 | 3 个回答 | 0

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Error in robustfit when use instead of lscov function
Hi, I want to use robustfit instead of lscov function but I got the below error when I run rboustfit function: %% *Warnin...

7 years 前 | 0 个回答 | 0

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How to get the points on line or points which certain distance from the line
I have 3D matrix file where XYZ are lon,lat and height. I plot these XYZ value using scatter3. Now I want to plot profile of hei...

7 years 前 | 0 个回答 | 0

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Remove outliers or noise from 1D GIS data
Hi, I want remove outliers or noise from my 1D GIS data which contain elevation change. I use below code from one example of ...

7 years 前 | 0 个回答 | 0

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Grid to scatter data conversion
Hi, I have two data sets which are not in same size/structure, one is from the observation (lat, lon, vel) and another is fro...

7 years 前 | 1 个回答 | 0

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