Community Profile # Peng Liu

### Stanford University

Last seen: 8 mois ago Active since 2013

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Question

What makes the difference between griddata and griddatan?
Since griddatan is the n-d generalization of griddata, I assume that for 2-d scenarios, they should have identical behavior. Thi...

plus de 5 ans ago | 0 answers | 1

### 0

Question

Why MATLAB has a confusing function name such as griddata (or griddatan)?
I am really confused by the function names *griddata* and *griddatan*, because these function names are prefixed by *grid* where...

plus de 5 ans ago | 1 answer | 0

### 1

How to code a function of the Probability mass function of the Poisson binomial distribution
You may use nchoosek. F_k is nothing but a k-element subset of {1,2,3,...,n}. The sum is over all possible F_k, which can be gen...

presque 6 ans ago | 0

| accepted

is there a built in function to get minimum nr of bits for an integer ?
Not floor(log2(x)) + 1 but ceil(log2(x)) is correct

environ 6 ans ago | 0

discrete joint probability distribution
You need to compute the histogram count for every pair (theta_i, v_j), and then normalize it by the sample size. Thus, histcount...

environ 6 ans ago | 2

| accepted

What's the reason for different memory consumption for sparse row and column vectors?
% The minimum data storage requirement formula for a double m x n sparse % matrix with nnz non-zero elements, including th...

environ 6 ans ago | 1

| accepted

Question

What's the reason for different memory consumption for sparse row and column vectors?
See below: >> a = sparse(1e12,1); >> b = sparse(1,1e9); >> whos a b Name Size ...

environ 6 ans ago | 2 answers | 0

### 2

Matlab jokes or puns
Q: How many MATLAB functions are there in the world? A: There is only one MATLAB function called matlabFunction.

environ 6 ans ago | 3

The theory of "_mergesimpts" of builtin functions.
It is an undocumented built-in function, which finds unique elements/rows within a specified tolerance. You may find a detailed ...

environ 6 ans ago | 0

Can someone help me with my code ? I can not see error.
There is nothing wrong with your code. You just need to save the function vdp1000 as an independent m file with name vdp1000.m a...

presque 8 ans ago | 0

Question

Trendy urlfilter command to access Chinese website
Hello, As we know, the following Trendy command num = urlfilter(url, target) works for a string type target. However, I...

presque 9 ans ago | 0 answers | 0

### 0

How to add Delay
You may try the *pause* command

plus de 9 ans ago | 0

Question

How to generate an *M^N* by *N* integer matrix consiting of all possible length N row vectors whose elements are between 0 and M-1?
I need to generate an *M^N* by *N* matrix consisting of all possible length *N* (N>=2) row vectors whose elements are *integer* ...

plus de 9 ans ago | 2 answers | 0