Because you cannot exhaust your efforts by keeping guessing that the entire x-y plane that is infinite, for an area (domain) that contains the global maxima, it is much faster to visualize the data, then make a few adjustments, and you will arrive at the optimum solution. The global maxima ( peak-D) was outside the initial guess domain of search. But, looking at plot-A definitely tells you that peak-E or peak-F is a local maxima, not a global one, which is peak-D (the highest in plot-A). If an initial area ( x and y) is specified for the algorithm (optimisations) to search for the peaks and this specified area domain does not contain the tallest peak ( peak-D from plot-A in Figure 1), the search will come up with the smaller peak as a solution (either peak-E or peak-F, depending on the area boundary of search). The following plots, Figure 1, illustrate this point.Īll the plots from Figure 1 are peaks plots plot-A has three peaks ( D, E, and F) and two troughs (unlabelled) plot-B and plot-C are both single peaks with different sharpness and height. It also it does not indicate whether a small deviation from the solution is still approximate enough or completely inapplicable. Non-visual software will still give you what your search algorithm finds, but you would not know whether that solution is global (entire) or local (restricted to the domains you specified). Visualization will give you a much wider view of the problem set that is to be investigated in other words, you can see the problem entirely from a different analysis point of view. Without visual analysis, it would take longer for engineers to fully understand the path of the bullet, because numerical data captured from measuring devices are just too much to thoroughly analyse by hand or with non-visual software. All this data is then fed into a computer software visualization package for analysis. The moment you think you heard a gun fire, the bullet is already embedded in its target.Įngineers use other technologies, such as fast digital photography, to capture the bullet’s path frame by frame air turbulence sensors map out the path the bullet follows. The inability of human temporal perception to resolve time-interval lapses of very fast events such as a flying bullet.For example, you cannot see atoms or molecules, but electronic sensors can capture important physical measurable quantities from experimenting with or manipulating them. The human eye’s inability to see objects that are smaller than our visual resolution.For physical (tangible) phenomena, the difficulties relates to: There are a lot of physical parameters or variables that are the subject of certain data investigations that are not easy to observe. Advantage of Numerical Data Visualization Some of these tools are commercial, GPL, or copyrighted, but source code is still available for interested Java developers. (Java Advanced Imaging) in Java2 and later versions have encouraged different vendors, industrial and academic researchers, computer hobbyists, and the like to develop Java tools (libraries and stand-alone programs) for numerical data visual analysis. With the availability of Java2D, Java3D, and J.A.I. In some cases visual analysis can lead to new discoveries. With well-designed visual tools, the investigator can analyse these data sets more efficiently. Visual display of quantitative information can be a useful tool in learning experiences and of understanding physical phenomena, have created a new demand for interpretation, analysis, and display of massive quantities of data. Scientific or business data can be massive, and when one tries to sift through to find correlations among numerous variables, it is time consuming and often leads to a limited understanding of parameters of interest to a professional. The primary goal of visual analysis for Technical Computing is to enable the engineer, scientist, economist, and all related professionals to better understand his/her data through the use of visual methods. We may make money when you click on links to our partners. content and product recommendations are editorially independent.
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