What is the difference between time and price based charts?

Time based charts are based on time. The X axis or time scale is linear.

Price based charts are composed from the price action. The time scale is therefore non-linear. The most popular are Renko, Point&Figure and Range charts. You can find all of them in Desktop JForex4.

Why is it taking so long to display Renko, Range bars, Kagi or Line break charts?

The price based periods are calculated inside the platform and the results are saved in local cache folder. The faster is the download speed of the time based periods, from which they are calculated, and the faster is the CPU and the disk, the quicker is the calculation process. 2nd time you open the same chart must be much faster unless you delete the cached data.

Does JForex downloads each and every time period data?

No. JForex downloads only 4 time based periods:

• Ticks
• 1 Minute
• 1 Hour
• 1 Day

Other periods (time and price based) are calculated from these 4 and results are saved on disk in cache folder. We do not save any other time or price based periods in our database.

All the time periods in between those 4 periods are calculated from these 4. For example, 10 seconds are calculated from Ticks, but 5 minutes from 1 minute data.

Daily period is formed based on UTC, therefore other Daily, Weekly and Monthly periods are calculated from daily period data if the Day start time setting equals UTC. If not, these periods are calculated from hourly data.

Why is the data saved in cache folder so large?

We save the historical price data in order to reduce the amount of data downloaded and increase the speed of chart display.

The other periods, which are calculated from ticks, 1 minute, 1 hour or 1 day data need to be saved in order to avoid re-calculation each time the period has to be displayed in chart.

The more periods you display on charts, the more data are saved.

How do you form the Volume data?

We sum all the volumes of the Best Bid or Best Ask in the given period.

Cannot see your Placed Bid/Offer order in the Market depth?

Most probably the order is too small. There is a threshold in each instrument. The order has to be larger than 100K in EUR/USD to be shown in Market Depth.

Can I download the level 2 history (Market depth)?

No, we do not save it. We save the history of Best Bid/Ask with the corresponding volumes.