CAST | Software for Exploratory Space-Time Analytics | Machine Learning library

 by   GeoDaCenter C++ Version: v1.0 License: GPL-3.0

kandi X-RAY | CAST Summary

kandi X-RAY | CAST Summary

CAST is a C++ library typically used in Artificial Intelligence, Machine Learning applications. CAST has no bugs, it has no vulnerabilities, it has a Strong Copyleft License and it has low support. You can download it from GitHub.

CAST is a free and open-source, cross-platform program (Windows, Mac OSX and Linux) designed "to detect spatial patterns and trends in space-time data.". It is developed using Python (based on wxPython and PySAL) and C++ (to accelerate some core functionalities e.g. kernel density maps and Local Indicators of Spatial Autocorrelation or LISA maps). Like its sister software GeoDa, CAST provides a user-friendly and graphical interface to methods of exploratory spatial data analysis (ESDA), in this case for space-time data. CAST makes it easy to represent different dimensions of space-time data (like crime types or neighborhood characteristics) in views such as maps, graphs, and calendars that can be animated over time. All of these views are linked to allow analysts to identify how selected subsets of the data are characterized across these dimensions. Using statistical significance tests, CAST includes several cluster maps and trend graphs to detect where concentrations of crimes are higher or lower than expected.
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            kandi-support Support

              CAST has a low active ecosystem.
              It has 17 star(s) with 6 fork(s). There are 6 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              CAST has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of CAST is v1.0

            kandi-Quality Quality

              CAST has no bugs reported.

            kandi-Security Security

              CAST has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              CAST is licensed under the GPL-3.0 License. This license is Strong Copyleft.
              Strong Copyleft licenses enforce sharing, and you can use them when creating open source projects.

            kandi-Reuse Reuse

              CAST releases are available to install and integrate.

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            CAST Key Features

            No Key Features are available at this moment for CAST.

            CAST Examples and Code Snippets

            No Code Snippets are available at this moment for CAST.

            Community Discussions

            QUESTION

            exception: "Illuminate\\Database\\QueryException" , Column not found: 1054 Champ using laravel 8
            Asked 2021-Jun-15 at 22:38

            I want to Edit data, so for that, I should display it in a form. In my table in the database, I have a primary key named id_casting

            So I have he following code :

            My script :

            ...

            ANSWER

            Answered 2021-Jun-15 at 22:38

            By default laravel thinks that id is the primary key in your table. To fix this you would have to a primary key variable in your model

            Source https://stackoverflow.com/questions/67994004

            QUESTION

            Allocating memory with calloc for an int pointer
            Asked 2021-Jun-15 at 21:19

            Hey guys given the example below in C when operating on a 64bit system as i understand, a pointer is 8 byte. Wouldn't the calloc here allocate too little memory as it takes the sizeof(int) which is 4 bytes? Thing is, this still works. Does it overwrite the memory? Would love some clarity on this.

            Bonus question: if i remove the type casting (int*) i sometimes get a warning "invalid conversion from 'void*' to 'int*', does this mean it still works considering the warning?

            ...

            ANSWER

            Answered 2021-Jun-15 at 21:19

            calloc is allocating the amount of memory you asked for on the heap. The pointer is allocated by your compiler either in registers or on the stack. In this case, calloc is actually allocating enough memory for 4 ints on the heap (which on most systems is going to be 16 bytes, but for the arduino uno it would be 8 because the sizeof(int) is 2), then storing the pointer to that allocated memory in your register/stack location.

            For the bonus question: Arduino uses C++ instead of C, and that means that it uses C++'s stronger type system. void * and int * are different types, so it's complaining. You should cast the return value of malloc when using C++.

            Source https://stackoverflow.com/questions/67993513

            QUESTION

            How do I cast a float pointer to a uint8_t pointer in Metal Shader Language?
            Asked 2021-Jun-15 at 21:02

            I am trying to write the following C code in Metal Shading Language inside of a kernel void function:

            ...

            ANSWER

            Answered 2021-Jun-15 at 21:02

            Don't know about metal specifically, but in ordinary C, you'd want to put f and byteArray inside a union

            Here's some sample code:

            Source https://stackoverflow.com/questions/67990565

            QUESTION

            Using std::atomic with futex system call
            Asked 2021-Jun-15 at 20:48

            In C++20, we got the capability to sleep on atomic variables, waiting for their value to change. We do so by using the std::atomic::wait method.

            Unfortunately, while wait has been standardized, wait_for and wait_until are not. Meaning that we cannot sleep on an atomic variable with a timeout.

            Sleeping on an atomic variable is anyway implemented behind the scenes with WaitOnAddress on Windows and the futex system call on Linux.

            Working around the above problem (no way to sleep on an atomic variable with a timeout), I could pass the memory address of an std::atomic to WaitOnAddress on Windows and it will (kinda) work with no UB, as the function gets void* as a parameter, and it's valid to cast std::atomic to void*

            On Linux, it is unclear whether it's ok to mix std::atomic with futex. futex gets either a uint32_t* or a int32_t* (depending which manual you read), and casting std::atomic to u/int* is UB. On the other hand, the manual says

            The uaddr argument points to the futex word. On all platforms, futexes are four-byte integers that must be aligned on a four- byte boundary. The operation to perform on the futex is specified in the futex_op argument; val is a value whose meaning and purpose depends on futex_op.

            Hinting that alignas(4) std::atomic should work, and it doesn't matter which integer type is it is as long as the type has the size of 4 bytes and the alignment of 4.

            Also, I have seen many places where this trick of combining atomics and futexes is implemented, including boost and TBB.

            So what is the best way to sleep on an atomic variable with a timeout in a non UB way? Do we have to implement our own atomic class with OS primitives to achieve it correctly?

            (Solutions like mixing atomics and condition variables exist, but sub-optimal)

            ...

            ANSWER

            Answered 2021-Jun-15 at 20:48

            You shouldn't necessarily have to implement a full custom atomic API, it should actually be safe to simply pull out a pointer to the underlying data from the atomic and pass it to the system.

            Since std::atomic does not offer some equivalent of native_handle like other synchronization primitives offer, you're going to be stuck doing some implementation-specific hacks to try to get it to interface with the native API.

            For the most part, it's reasonably safe to assume that first member of these types in implementations will be the same as the T type -- at least for integral values [1]. This is an assurance that will make it possible to extract out this value.

            ... and casting std::atomic to u/int* is UB

            This isn't actually the case.

            std::atomic is guaranteed by the standard to be Standard-Layout Type. One helpful but often esoteric properties of standard layout types is that it is safe to reinterpret_cast a T to a value or reference of the first sub-object (e.g. the first member of the std::atomic).

            As long as we can guarantee that the std::atomic contains only the u/int as a member (or at least, as its first member), then it's completely safe to extract out the type in this manner:

            Source https://stackoverflow.com/questions/67034029

            QUESTION

            Convert interface with nullable string property to string property
            Asked 2021-Jun-15 at 18:49

            I have the following two interfaces, one which allows a nullable vin, the other that doesn't:

            ...

            ANSWER

            Answered 2021-Jun-15 at 18:49

            You can use a type predicate to define a user-defined type guard like this:

            Source https://stackoverflow.com/questions/67989014

            QUESTION

            Spring Boot BatchAcknowledgingMessageListener Splitting Message on Commas
            Asked 2021-Jun-15 at 17:49

            I have a Spring Boot app with a Kafka Listener implementing the BatchAcknowledgingMessageListener interface. When I receive what should be a single message from the topic, it's actually one message for each line in the original message, and I can't cast the message to a ConsumerRecord.

            The code producing the record looks like this:

            ...

            ANSWER

            Answered 2021-Jun-15 at 17:48

            You are missing the listener type configuration so the default conversion service sees you want a list and splits the string by commas.

            Source https://stackoverflow.com/questions/67990755

            QUESTION

            How do I dynamically get an object type and cast to it?
            Asked 2021-Jun-15 at 17:41

            How do I get the object type so I can directly cast to it? This is the ideal method I would like to execute:

            ...

            ANSWER

            Answered 2021-Jun-15 at 17:41

            All controls derive from Control. Therefore, instead of using the type Object use Control. Control has most of the members of these controls like a Click event.

            Source https://stackoverflow.com/questions/67990050

            QUESTION

            Left join returning additional data which I want to exclude
            Asked 2021-Jun-15 at 15:42

            I have 2 tables like below :

            ...

            ANSWER

            Answered 2021-Jun-15 at 15:40

            QUESTION

            Copy files incrementally from S3 to EBS storage using filters
            Asked 2021-Jun-15 at 15:28

            I wish to move a large set of files from an AWS S3 bucket in one AWS account (source), having systematic filenames following this pattern:

            ...

            ANSWER

            Answered 2021-Jun-15 at 15:28

            You can use sort -V command to consider the proper versioning of files and then invoke copy command on each file one by one or a list of files at a time.

            ls | sort -V

            If you're on a GNU system, you can also use ls -v. This won't work in MacOS.

            Source https://stackoverflow.com/questions/67985694

            QUESTION

            Why comparing a small floating-point number with zero yields random result?
            Asked 2021-Jun-15 at 15:13

            I am aware that floating-point numbers are tricky. But today I encountered a case that I cannot explain (and cannot reproduce using a standalone C++ code).

            The code within a large project looks like this:

            ...

            ANSWER

            Answered 2021-Jun-15 at 09:57

            Barring the undefined behavior which can be easily be fixed, you're seeing the effect of denormal numbers. They're extremely slow (see Why does changing 0.1f to 0 slow down performance by 10x?) so in modern FPUs there are usually denormals-are-zero (DAZ) and flush-to-zero (FTZ) flags to control the denormal behavior. When DAZ is set the denormals will compare equal to zero which is what you observed

            Currently you'll need platform-specific code to disable it. Here's how it's done in x86:

            Source https://stackoverflow.com/questions/67982764

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install CAST

            You can download it from GitHub.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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            https://github.com/GeoDaCenter/CAST.git

          • CLI

            gh repo clone GeoDaCenter/CAST

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            git@github.com:GeoDaCenter/CAST.git

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