12/13/2023 0 Comments Youtbe tutorial simply fortranToday, Ada is still used for developing very large and critical software systems. At the time of its development, from 1977 – 1983, the Department of Defense was using hundreds of programming languages and Ada was meant to replace all of them. The structured, statically typed, imperative, and object-oriented high-level programming language, is partially based on Pascal and other earlier languages. PTC ApexAda and PTC ObjectAda, DDC-I ScoreĪda was developed in the early 1980s by Jean Ichbiah and his team at CII-Honeywell-Bull in France under contract to the United States Department of Defense. Major Implementations: AdaCore GNAT, Green Hills Software Optimizing Ada 95 compiler, PTC, Inc. [ Developer: United States Department of Defense In 2020 Chinese state media reported that MATLAB had withdrawn services from two Chinese universities as a result of current U.S. MATLAB was a success and has been in continuous use around the world for the last several decades. MATLAB, which began as a simple interactive matrix calculator, allows matrix manipulations, plotting of functions and data, implementation of algorithms, creation of user interfaces, and interfacing with programs written in other languages.Ĭleve Moler designed MATLAB because he wanted to give his students access to LINPACK and EISPACK (both mathematical software libraries) without them having to learn Fortran. Real, dimension(10)::y = (/ 2.0, 4.0, 6.0, 8.0, 6.0, 4.0, 2.0, 0.0, 2.0, 4.Major Implementations: Used in engineering, science, and economicsĪs its name suggests, MATLAB, developed by MathWorks in the early 1980s, is intended primarily for numerical computing and used by millions of people with backgrounds in engineering, science, and economics. To experiment, users can start with the code below: program test The complete code to show the example plot is quite terse. In most cases, the calling routine should clean up the plot variable before moving on with the simple call: call destroy_plot(p) Complete Program CleanupĪfter the window is closed, the user’s program will continue execution. The appearance of the window will obviously differ depending on the platform (the example is from GNU/Linux). The call above will open a window and pause the user’s program execution until closed. Now that the plot is completely configured, we can actually display the plot: call display_plot(p) We could additionally set scaling on the axes, but the default behavior to autoscale the axes should be sufficient in many cases. Our axes should now appear properly labeled. In our case, we can use the following: call set_xlabel(p, "Easy") Labeling the AxesĪ proper plot should always have labeled axes. The pixel plot, like the scatter plot above, uses points for each datapoint, but the smaller pixel representation might be preferable when a substantial amount of data is being drawn. Another data set can be added and configured similarly, and it would be referenced using 1 as it’s index.ĭepending on the data, the user might prefer to use a line plot, bar chart, or the pixel plot. Note that the series is refered to as 0 since it is the first data set. To add a label and configure our data to appear in a scatter chart, we would call: call set_serieslabel(p, 0, "Example Data") Ĭall set_seriestype(p, 0, APLOT_STYLE_DOT) As mentioned in the reference section, the numbering for referencing series is zero-based. The data above should now be added to the plot as a series. Adding a Data SetĪplot can produce a handful of two-dimensional plots to visualize user data. At this point, the user may want to set up a plot title: call set_title(p, 'Example Plot')Īt this point, no data has been added. The call above creates a plot variable that is used in all subsequent calls to Aplot’s programming interface. The first step in creating a plot is to initialize a plot variable: type(aplot_t)::p Simply Fortran will take care of everything else necessary to include the Aplot library in an executable. Including the ModuleĪplot is accessible via a single Fortran 90 module: use aplot This tutorial is meant to provide the necessary steps for getting started with Aplot. Creating a graph from Fortran using Aplot is simple and easy.
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