2. Next, you can see on the screen that the small picture frame shown in Figure 2 will appear at this time, and the data of the third step on the way will appear when the mouse moves the small picture frame, that's all. This method is also suitable for the marking of infrared image data, and the marked place should be dealt with emphatically, and the error should be removed in post-processing.
3. Enter the data in origin8.0 or 8.5, select the data of "X" and "Y" with the mouse, move the mouse to step 1 in the figure, and modify the name on the coordinate axis: left-click to select the name to be modified, and then right-click to appear "Properties ...".
After selection, you can edit it, and you can also adjust the font color, size, type, and whether you want an outer border. Next, after the linear fitting dialog box pops up, determine the settings of related parameters.
4. Then left-click to select the phenomenon in the second step in the figure, continue to select the target with the mouse, and you can continue to add appropriate analysis → fitting → polynomial → open the dialog box ... and click OK to successfully join the trend line.
Extended data:
In order to draw the trend line correctly, we only need to find two meaningful tops or bottoms and then connect them correctly. Next, according to the definition of trend, you can draw a trend line to measure the trend.
1, for the upward trend, we can connect the low points so that most of the bottom points are on the same straight line as possible.
2. For the downward trend, we can connect its vertices so that most of them are in the same straight line as possible.
3. For the sideways trend, we can connect the vertices and lows with straight lines to form an oscillation interval. Then when the price movement breaks through the corresponding trend line, we can think that the trend may be reversed.
In order to improve the drawing speed, users had better follow the following drawing principles:
1. Drawing steps: set the map sheet → set the unit and precision → establish several layers → set the object style → start drawing.
2. The graph always uses the ratio of 1: 1. In order to change the size of the pattern, different printing scales can be set in the drawing space when printing.
3. When the pattern of a small area is processed, the scale factor value of the pattern can be reduced. On the contrary, when processing the pattern filling of a larger area, the scale factor value of the pattern can be increased.
4. Set different layers, colors and line widths for different types of primitive objects. The color, line type and line width of primitive objects are controlled by layers.
5. When drawing accurately, you can use the grid capture function and set the grid capture interval to an appropriate value.
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