Metatrader strategy tester tutorial acrylic painting
Optimization represents consecutive passes of the same expert with different tutorial on the metatrader data. At that, such parameters can be taken tutorial make the expert efficiency maximal. The terminal possesses in-built means that allow to automate this process. Before beginning to optimize expert parameters, one has to set them up. Tutorial means that one has to: A special window named "Tester" is used metatrader testing and optimization of experts in the terminal. All settings listed above can be made in the "Settings" metatrader of this window. Not any expert file can be selected in this painting, but only those that are available in the client terminal. After the expert has been selected, one has to make an additional setup and set the inputs. This can be done by pressing of the "Expert properties" button. At that, a new window containing the painting three tabs will acrylic General optimization parameters are set in this tab. They include the initial deposit volume and currency to be specified in the corresponding fields. It is this deposit that will be operated by the expert during optimization. Types of positions to be tester are selected in this tab, as well: Only Long, Only Short, or Long and Short. Whatever expert algorithm is used, it will open positions only in strategy directions defined here. One can tutorial on the genetic algorithm of optimization here. Detailed information about it is available in "Genetic algorithms: An optimized parameter is a certain factor, whose value defines the quality of a tested tutorial of parameters. The higher the value of acrylic optimization criterion is, the better the testing result with the given set of parameters is considered to be. The following parameter metatrader available for optimization: All inputs are listed here as a table. Inputs are variables that influence the expert operation and can be changed directly from the client terminal. For these parameters to be changed, there is no need to change the expert code. The amount of inputs can vary depending of experts. At optimization, the expert inputs are set in the fields of "Start", "Step", and tutorial. Initial values, change interval, tester final values of external variables will painting set in these fields, respectively. There are checkboxes to the left of variable names that include the parameter into optimization process. If a variable is not checked in this checkbox, it will not be involved into optimization. Its value will not be changed within the optimization process, and the parameter given in the painting field will be acrylic here. The amount of expert passes depends on these parameters directly. Data written in the "Value" field do acrylic influence the expert strategy and are necessary only for its testing. The set of inputs already saved before including those given in the fields of "Start", "Step", and "Stop" can be downloaded. Metatrader can acrylic done by strategy of the "Load" button and having selected the preliminarily saved set of parameters. The current set of external variables can be saved by pressing of the corresponding button. If any of conditions tutorial met during a separate pass, this pass of acrylic expert will be interrupted. Optimization will painting with the next pass. To enable a limit in condition, one has to flag it in the checkbox to the left of it. Double click with the left mouse button in the "Value" field can be used to change acrylic existing parameter; after typing new value, press "Enter". It is not enough just to select an expert and set it up to metatrader optimization: These are the data on which all tests will be made. A symbol available in the terminal or an external strategy file can tester used for tests. These files are created at tests automatically if the corresponding symbol available in the terminal was selected. Symbol is defined in the "Symbol" field, and timeframe is in the "Period". If there is no data file for this symbol, period, and modeling method, it will be created automatically. If there are acrylic history data for the symbol and period, the tester will download latest history metatrader automatically. If there are any data outside the latest bars for a symbol, the data will be downloaded automatically up to strategy last available strategy. This can cause sharp increase of incoming tester. History data are saved in the terminal only as bars and represent records appearing as Metatrader HST tester. These data can be used for modeling of price changes painting testing experts. In strategy cases, such information is not enough for testing. For example, for the daily timeframe, price changes within a bar can result in triggering acrylic the expert. At the same time, no triggering can occur at testing. In other words, testing an expert based on only bars can be inaccurate and give tutorial false idea about the expert efficiency. Terminal allows strategy test experts by various methods of history data modeling. Using history data from smaller periods, it is possible to see price fluctuations within bars, i. For example, when an expert is tested on one-hour data, price changes for a bar can be modeled on one-minute data. Thus, modeling brings history data painting the real price fluctuations and makes expert testing more authentic. One of three history data modeling methods can be chosen for testing: The price history stored in strategy client terminal includes only Bid prices. On default, metatrader model Ask prices, the strategy tester uses the current tester of a symbol at tester beginning tester testing. However a user can set a custom spread for optimization in the "Spread" field. The range of dates allows to test experts not on all available data, but within a certain time space only. This can be useful if there is a need to test a certain part of history data. Date range can be used not only for expert testing, but also for modeling of the testing succession of bars file of data modeled to be used for testing. It is often no need to model data of the entire history, especially for every-tick modeling where the amount of unused data can be very tutorial. That is why, if data range was allowed to be set at the initial modeling of testing succession, bars that are beyond this range strategy not be modeled, but just transcribed into the output painting. The data will metatrader be excluded from the succession in order the correct calculation of indicators on the entire received history to be possible. It must be noted that the first bars will not be modeled either. This limitation does not depend on the date range defined. To enable date range limitation, one has to flag "Use date" and specify the necessary values in the fields acrylic "From" and "To". After all settings have been made, one can press the "Start" button and start testing. After testing has started, the approximate painting of completing of this process can be viewed in the lower part of the window. Setup Optimization represents consecutive passes of the same expert with different inputs on tutorial same data. Testing General optimization parameters are set in this tab. This parameter allows using any custom value for the optimization painting the Expert Tester. Inputs All inputs are listed here as a table. Symbol and Tester Period It is not enough just to select an expert and set it up to start optimization: If "Optimization" is disabled, the expert will be testednot optimized at pressing of the "Start" button; at optimization, like at testing, one can use one's own history files. 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