I've written a code in python that opens and reads a file that is saved as an .hdf5 format. If I don't have an hdf viewer installed on my computer can this code still run?
I'm not using it to open the file so I can look at it, I'm trying read the file & extract data before manipulating it in python. Probably a silly question but I'm very new to this coding thing. Would my code be unable to open a file type that can not be opened on my computer?
Cheers,
Claire
An hdf5 viewer is a program that knows how to interpret the contents of an hdf5 file — much like the program you are trying to write. So your program would at least need to include code (most likely in the form of a module) that knows how to do that.
I'm not very familiar with hdf5. But I think you couldn't manipulate it directly if the file is binary since it's not human readable and you could use something like viewer to "decode" those binary data.
According to this though, I think the answer is you don't have to have the hdf5 viewer to run your code.
So the python code has h5py but the code itself does not need the computer I'm working on to have the hdfviewer software.
It is still capable of running the code without opening the file with the hdfviewer.
Related
I have got a trace file that is binary in nature. I want to convert it to a text file and convert the data inside it to decimal form. I mean I am not sure, how to do this. This .trc file contains data in the form of telegrams and I want to extract particular kind of telegram and save them in text file which is readable in nature. I have to do all of this using C++.
Do you suggest any other language for it or does anyone has any idea about doing this in C++?
Binary trace files are usually encoded in proprietary formats. And there are applications or profilers specifically built to parse them.
Unless you know the file format, the only way to decode it is through reverse engineering. And in most cases it's not worth the effort.
Try to find documentation about it. Or maybe an application or utility that loads the file and exports data that is easier to read.
In case you are speaking about .trc binary files from Teledyne Lecroy Oscilloscopes, I would suggest to any of the following libraries out there for that:
https://pypi.org/project/lecroyparser/
https://github.com/jneer/lecroy-reader
https://github.com/yetifrisstlama/readTrc
https://igit.ific.uv.es/ferhue/lecroyparser
Currently I'm just saving the file as MS-DOS CSV with excel. I'm looking for the fastest way (in terms of writing the code) of doing it automatically.
I strongly prefer C++, but any simple executable program I can call from a C++ app would do.
Unzip the xslx file with eg WinZip and have a look at the resulting files. This may help.
I tried to build a chatbot in AIML. I downloaded the codes from http://nlp-addiction.com/chatbot/mathbot/ but couldn't get the idea about how to run the program. Please help me.
An AIML file isn't program code, it's a data file (much like any other xml file).
You need to use an interpreter like Program-AB to load and use the file to answer queries.
If you just want to test the contents and formatting of the aiml file, you could use Pandorabots and load the file into a blank bot fairly easily.
Yes, AIML file isn't program code. It's just like a data format. You can learn about it more from here : http://www.alicebot.org/aiml.html
AIML is a data encoding format that tells the bot when to do what to do. Many interpreters can be used to interpret the aiml tags.
One of them is PyAIML which is python based interpreter fairly simple to use.
Assuming I have a file with .doc extension in Windows platform, how can I open the the file for outputting its contents on the screen using the ofstream object in C++? I am aware that the object can be used to open files in text and binary modes. But I would like to know if a .doc (or even .pdf) file can be opened and its contents read.
I've never actually done this before, but after reading up on it, I think I might have a suggestion. The .docx format is actually just XML that is zipped up. After unzipping, the file is located at word/document.xml. Doing this in a program is where it gets fun.
Two options: If you're using C++ CLR (.NET) then Microsoft has an SDK for you. It should make it pretty easy to open Office documents.
Otherwise if you're just using regular C++, you might have to do some extra work.
Open the file and unzip it using a library like zlib
Find the document.xml file inside
Parse the XML document. You'll probably want to use some kind of XML parsing library for this. You'll have to look up the specs for the XML to figure out how to get the text you want.
C++ std library has ifstream class that can be used to read simple text files, and for read binary files too.
It is up to you to interpret these bytes in the file. To proper interpret the binary file you need to know the format of the file.
If you think of MS Word files then I would start from here: http://en.wikipedia.org/wiki/Office_Open_XML to understand MS Word 2007 format.
You might find the Boost Iostreams library ( http://www.boost.org/doc/libs/1_52_0/libs/iostreams/doc/home.html ) somehow useful if you want to make some filter by yourself.
I'd like to read the contents of a .csv file from a website, into a c++ program. Specifically, it is financial data of the form from google finance.
http://www.google.com/finance/historical?cid=22144&startdate=Nov+1%2C+2011&enddate=Nov+14%2C+2011
(If you append "&output=csv" to the above link it will download the data as a csv file)
I know that I can use something like libcurl to download the file and then read it in from there, but I wanted to read it directly into the program without having to write it to a file first.
Can I get some suggestions on the best way to do this? I was thinking boost.asio but I have no experience with it (or network programming in general).
If you are trying to download it from a web resource you will need to implement at least some part of the HTTP protocol. libcurl will do this for you.
You don't need to save it as a file. This example will show you how to download and store it in a memory buffer.