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Why is Great Wisdom’s stock selection not accurate after downloading the data?

1. System settings

Go to View>Options>System Parameters, set the 5-minute line storage days to 133 days, and set the 1-minute and split data according to the personal hard drive size. Of course, the longer the storage days, the better.

2. Download data

After installing the software for the first time and setting the system parameters, download historical data, enter Tools > Download data, and select daily line, ex-rights data, financial data, and 5-minute line , Level-2 daily statistics, select automatic synchronization, do not select the number of days to download, and then click Start.

Data download speed is generally very fast, but when decompressing and writing to disk, special attention must be paid to waiting for the data to be written to disk before closing the download window.

After the first data download is completed, if it can be started and closed normally during trading hours every day, there is no need to download it again.

For the following situations, you need to selectively download data.

A. If the computer is not turned on normally that day, you need to download the individual transactions before doing the closing operation.

B. Financial and ex-dividend data are automatically supplemented, but due to special factors, the update may not be timely. In this case, download the financial ex-dividend data.

C. If there is no closing operation for one day or several days, you need to re-synchronize the daily, ex-dividend, financial, 5-minute, and Level-2 daily statistical data. The operation steps are the same as the first data download. .

3. Closing operation

Closing operation is very important. He will write down and save the day's transactions, minute line, and daily line.

The user's extended data and custom data will also be calculated and saved on disk. In order to ensure the comprehensiveness and accuracy of these data, closing operations must be done every day.

(Note that the closing operation will be automatically performed 10 minutes after the transaction is completed. The automatic closing operation time is different for A shares, Hong Kong stocks and futures).

If the closing operation is not done normally on a certain day, the time-sharing chart, minute line and daily line can be completed by downloading data later. However, since the download of historical data is not provided for individual transactions, the user's A day's historical recall and expanded and customized data based on ticks will be incomplete.

There is only one solution, which is to copy this day's prp file from other users' machines, and then refresh the extension and custom data.

4. Data refresh

If you find errors in individual time-sharing, minute-level, and daily lines, you can right-click the stock name in the graphics window and click Refresh data. You can immediately re-request relevant data for the current stock.

5. Data sorting and deletion

Due to abnormal exit, data file errors may occur. If found, data sorting will be carried out immediately.

Open Tools>Data Management, select the data sorting tab, check the boxes for time misalignment, price less than or equal to 0, disorder of highest price and lowest price, sorting the time sequence of daily and 5-minute lines, and then click to execute sorting .

Note that each market must be sorted out.

If you find that the number of rising and falling stocks in the historical data of the market is missing, you can click Update the number of rising and falling stocks to fill it in.

If the data of a certain day is completely wrong due to market reception and other reasons, you can delete the data of that day and download it again after deletion.

6. Deal with serious data errors

Serious data errors may cause the market to fail to be received normally or the software to fail to start. In this case, you can delete the drvdata folder in the dzh2 directory and store it here. is the data record temporarily received by the receiving engine.

If the problem still cannot be solved, delete the data folder under dzh2. All historical data is stored here. Once this folder is deleted, all historical data must be downloaded again.