Method and device for realizing a histogram for completely displaying measurement data

Abstract

The invention provides a method and a device for realizing a real-time histogram of complete statistical measurement data, and the device includes a measurement component, a display component, a control component and a storage unit. The method comprises the steps of: obtaining the measurement data and the number of the columns of the histogram; finding the maximum and minimum values ​​in the measurement data; calculating a step according to the maximum value, the minimum value and the number of the columns Progression value; determine the range of measurement data contained in each of the graph columns according to the step value; calculate the points of the measurement data in each of the graph columns; calculate the height of each of the graph columns according to the points of the measurement data , taking the ratio of the width of the histogram display window to the number of the bars as the bar width of the bar; drawing and displaying the histogram according to the bar width of the bar and the height of the bar. The method and device of the invention can realize the complete statistics and display of the histogram effect of the measurement data, and the number of histogram columns can be freely required by the user.

Description

technical field [0001] The invention relates to the field of electric variable testing, in particular to a method and a device for displaying a histogram of measurement data in electric variable testing. Background technique [0002] With the continuous development of test and measurement technology, the functions of various measurement equipment are also increasing. For example, in the measurement equipment, the measurement data can be displayed in the form of a histogram. A histogram is a statistical tabular form in mathematics. The histogram uses multiple rectangles of different heights to represent the distribution of measured data. [0003] In the prior art, the histogram is mainly constructed based on the average value and standard deviation in the measurement data. The basic composition principle is: first obtain a set of measurement data, calculate the average value and standard deviation of the measurement data, and determine the histogram column number, and make t...

AI Technical Summary

Problems solved by technology

[0004] Can find out the shortcoming that prior art exists from the method for drawing histogram in prior art: one, the integrality of measurement data that prior art histogram shows is limited by the number of described histogram graph column, give a simple example , if a set of measurement data obtained is 0, 2, 5, 7, 6, the number of histogram columns in the display window is two, the average value of this set of data is 4, and the standard deviation value is 2.4 , taking the standard deviation value 2.4 as the step value, according to the prior art, the data variation range of the first column of the histogram is 4 to 1.6, and the data variation range of the second column is 4 to 6.4, it can be seen , 2 of the above measurement data is counted into the first column, 5 and 6 are counted into the second column, while 0 and 7 are not statistically displayed

2. The number of histogram columns in the prior art can only be limited to an even number, otherwise the center point of the abscissa of the histogram cannot be accurately determined

Images