  C RUBY-ON-RAILS MYSQL ASP.NET DEVELOPMENT RUBY .NET LINUX SQL-SERVER REGEX WINDOWS ALGORITHM ECLIPSE VISUAL-STUDIO STRING SVN PERFORMANCE APACHE-FLEX UNIT-TESTING SECURITY LINQ UNIX MATH EMAIL OOP LANGUAGE-AGNOSTIC VB6 MSBUILD # VHDL macro for vector indices  » development » VHDL macro for vector indices

By : user2953681
Date : November 21 2020, 01:01 AM
hop of those help? I am searching for a macro, constant or attribute, whatever it is, replaces "(x downto y)". To explain in detail for example complex numbers, , A subtype can be used to declare an integer range like: code :
``````-- **pseudo** re = 2*WIDTH-1 downto WIDTH; im = WIDTH-1 downto 0; **pseudo**
subtype re is natural range 2*WIDTH-1 downto WIDTH;
subtype im is natural range   WIDTH-1 downto 0;
``````
``````x <= num(re);
y <= num(im);
`````` ## Treating a vector as a function on its indices/applying this function to another vector (of indices)

By : Ankur Mishra
Date : March 29 2020, 07:55 AM
With these it helps Let y=[4;6;2;9;5;1] be a column vector and let i=[4,2,1] be a vector of indices. I would like to somehow "apply" i to y and obtain [9,6,4]. Or at least [4;2;0;9;0;0]. , Simple:
code :
``````y(i)
``````
``````out = zeros(size(y));
out(i) = y(i);
`````` ## How to pick indices that are not in my indices vector MATLAB

By : Juerg Amrein
Date : March 29 2020, 07:55 AM
around this issue Consider A an m by n matrix. I want to split A column wise by randomly picking NumOfRandomColumn columns. I have used this code to generate a vector of random indexes and extract the firs section: , This should work:
code :
``````notselected = 1:MatrixColumnNumber;
notselected(indexes) = [];
secondSection = A(:,notselected);
`````` ## Remove rows from data frame using row indices where row indices might be zero length vector

By : Pedro Vasquez
Date : March 29 2020, 07:55 AM
it fixes the issue I want to drop some rows from some dataframe using numeric indices of the rows. But sometimes the indices vector that I am going to drop becomes zero length vector. In this case, I expect that nothing should be dropped from the original data frame. But instead of nothing everything is dropped. , For this reason, it is better to use %in% and negate ! it
code :
``````df[!seq_len(nrow(df)) %in% drop, ]
``````
``````df %>%
filter(!row_number() %in% drop)
`````` ## How to replace some indices of a vector with the same indices of another vector in R?

By : VonCrisp
Date : March 29 2020, 07:55 AM
should help you out I have two vectors (in R), each with the same length. I want to replace all negative values in vector A with the corresponding indices in vector B. For example, if indices 5, 7, and 9 of vector A are negative values, I want to replace indices 5, 7 and 9 of vector A with indices 5, 7, and 9 in vector B. , Here is one quick way: ## Can I access 2 indices of an array at the same time VHDL

By : Arden2600
Date : March 29 2020, 07:55 AM 