{"id":21986,"date":"2023-02-21T07:14:10","date_gmt":"2023-02-21T07:14:10","guid":{"rendered":"https:\/\/www.booksofall.com\/tw\/?post_type=product&p=21986"},"modified":"2023-02-21T07:18:15","modified_gmt":"2023-02-21T07:18:15","slug":"the-pdl-book","status":"publish","type":"product","link":"https:\/\/www.booksofall.com\/tw\/the-pdl-book\/","title":{"rendered":"The PDL Book"},"content":{"rendered":"

We assume you know Perl<\/a>, but that you are new to PDL.<\/p>\n

First, try out the PDL<\/a> command line by going through FirstSteps<\/a>. PDL has several ways of displaying two-dimensional images and producing publication quality plots, and so we have PGPLOT and PLplot for producing two dimensional plots either in a computer window or as written file formats (PostScript, PNG, JPEG and more), and we also have the capability to produce three dimensional plots in TriD.<\/p>\n

The power of PDL is in the ability to carry out threading (known as broadcasting in Python) over N-dimensional PDLs. When you code with threading you eliminate the multiple FOR loops that are the source of many slow-downs in code. Reading Threading and Functions will get you up to speed and in the right mind-set.<\/p>\n

If you require the speed of C routines<\/a> in your PDL code, there is also the powerful PDL:PP capability of PDL – you can write C code INLINE<\/a> in your PDL code, and it will be compiled and run when you call your Perl\/PDL scripts!<\/p>\n

PDL is primarily used by scientists who want access to Scientific libraries and data types, so we have Complex numbers<\/a> handled by PDL and the capabilities of PDL::Transform, the Slatec libraries accessible in PDL::Slatec, and any other libraries that you can access through Perl.<\/p>\n","protected":false},"excerpt":{"rendered":"