Wolfgang Schwanghart
University of Postdam
Professional Interests: GIS, Physical Geography, Hydrology, Geomorphology
Statistics
Contribute at least one answer each month for 6 consecutive months
Awarded to Wolfgang Schwanghart on 20 Jul 2017
Accept 1 answer given by other contributors
Awarded to Wolfgang Schwanghart on 20 Jul 2017
Obtain 50 solvers for a problem you have created
Awarded to Wolfgang Schwanghart on 30 Dec 2020
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Awarded to Wolfgang Schwanghart on 11 Feb 2013
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Awarded to Wolfgang Schwanghart on 10 Jan 2021
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Awarded to Wolfgang Schwanghart on 01 Nov 2019
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Awarded to Wolfgang Schwanghart on 09 Oct 2019
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Awarded to Wolfgang Schwanghart on 09 Oct 2019
Your submissions received 25 five star ratings
Awarded to Wolfgang Schwanghart on 09 Oct 2019
Publish your first submission
Awarded to Wolfgang Schwanghart on 09 Oct 2019
3 of your answers have been accepted
Awarded to Wolfgang Schwanghart on 20 Jul 2017
Provide your first answer ever to someone else's question
Awarded to Wolfgang Schwanghart on 20 Jul 2017
Content Feed
해결됨
Create an n-by-n null matrix and fill with ones certain positions
The positions will be indicated by a z-by-2 matrix. Each row in this z-by-2 matrix will have the row and column in which a 1 has...
9달 전
해결됨
Symmetry of vector
Determine whether the vector is symmetric or not (vector could be even or odd in length). For example: x = [1 2 3 3 2 1] ...
11달 전
해결됨
Vector creation
Create a vector using square brackets going from 1 to the given value x in steps on 1. Hint: use increment.
11달 전
질문
Fit Gaussian mixture model with weighted observations
Hi everyone, looking at the help of fitgmdist, I cannot see that there is the possibility to weight observations. Is there a rea...
2년 이하 전 | 답변 수: 3 | 0
3
답변2D gaussian filter with a variable sigma
Hi Chad, below is some code that does the trick using nlfilter. To be more efficient, I created a look-up table with a finite s...
2년 이상 전 | 0
What makes a Toolbox a Toolbox, and how is it recognized by Matlab?
Hi Chad, the trick is to have a Contents.m-file in the main folder of your toolbox. In TopoToolbox, the file starts with T...
약 3년 전 | 0
제출됨
Non-crossing polynomial quantile regression
Non-crossing polynomial quantile regression
5년 이상 전 | 다운로드 수: 2 |
제출됨
Flow Accumulation (upslope area)
Flow accumulation algorithm that routes through flats
6년 이상 전 | 다운로드 수: 4 |
질문
Customized icons in workspace
Hi all, I have written a couple of MATLAB classes and, as icing on the cake, I'd like to have customized icons in the worksp...
7년 이상 전 | 답변 수: 0 | 1
0
답변해결됨
index of n in magic(n)
let input=5; magic matrix 17 24 1 8 15 23 5 7 14 16 4 6 13 20 22 ...
7년 이상 전
해결됨
Order of things - 1
Let's assume you have a number of calculations to perform, that depend on each other. E.g. 'A' can be calculated, once the outco...
7년 이상 전
해결됨
Count decimal digits of a number
* Given an integer number you have to return the number of its digits. * For example 248 has 3 digits and 1589 has 4 digits ...
8년 이하 전
해결됨
Check if equal
Return true if all the elements of an nD array are equal, false otherwise.
8년 이하 전
해결됨
Add a row of zeros on top of a matrix
Given a matrix, insert a row of zeros as the top row.
8년 이하 전
해결됨
Too Many Zeros, Dump Them!
Sometimes when I create a matrix, I use this syntax: a = zeros(1000,1000); But when the function ends, I find that I don'...
8년 이하 전
해결됨
Enlarge array
Given an mxn numeric array (A) and a 1x2 vector (sz) indicating the dimensions [p q] to enlarge each element, return an (m*p)x(n...
약 8년 전
해결됨
Pascal's pyramid
In Pascal's triangle each number is the sum of the two nearest numbers in the line above: 1 1 1 ...
약 8년 전
해결됨
Create an index-powered vector
Given a input vector x, return y as index-powered vector as shown below. Example x = [2 3 6 9] then y should be [...
약 8년 전
해결됨
Matrix to column conversion
Given a matrix of any size, convert it into a column vector. e.g A=[10 20 30; 40 50 60] then, B = [10; 40; ...
약 8년 전
해결됨
Find the index of the largest value in any vector X=[4,3,4,5,9,12,0,4.....5]
The given function returns the index of the maximum value in a given matrix. such as X=[4,3,4,5,9,12,0,5] Ans= 6 if maxim...
약 8년 전
해결됨
Free passes for everyone!
_Simply return the name of the coolest numerical computation software ever_ *Extra reward* (get a _freepass_): As an addit...
약 8년 전
해결됨
Number of digits in an integer
Specifies how many digits in a given integer. Example: in=100 ==> out=3
8년 이상 전
해결됨
Generate a NaN...on purpose
The goal is to create a function that will return a single "NaN" without using the nan function. I am interested to see how many...
8년 이상 전
해결됨
Finding peaks
Find the peak values in the signal. The peak value is defined as the local maxima. For example, x= [1 12 3 2 7 0 3 1 19 7]; ...
8년 이상 전
해결됨
Find smallest integer type to accommodate your number
MATLAB supports 1-, 2-, 4-, and 8-byte storage for integer data. Find the smallest integer type to accomodate a scalar integer. ...
8년 이상 전
문제
Find smallest integer type to accommodate your number
MATLAB supports 1-, 2-, 4-, and 8-byte storage for integer data. Find the smallest integer type to accomodate a scalar integer. ...
8년 이상 전 | 3 | 솔버 수: 24
해결됨
Max index of 3D array
Given a three dimensional array M(m,n,p) write a code that finds the three coordinates x,y,z of the Maximum value. Example ...
8년 이상 전
