Login Page

Scaling


Scale Window

The Scale Window is for setting the scale to use for the main price graph or study graphs on the chart. Each graph in the chart has its own Scale settings.

Opening the Scale Window for the Main Price Graph

  1. Select Chart >> Chart Settings on the menu.
  2. Press the Scale button.
  3. Adjust the settings as required.
  4. Press OK. Press OK.

Accessing Scale Settings through the Values Scale

  1. Right-click on the Values Scale on the right side of the chart. The Scale menu will display.
  2. Select the Scale Range that you require.
  3. Or select Scale... to open the Scale Settings window.

Opening the Scale Window For a Study

  1. Select Analysis >> Studies.
  2. Select the particular study you want to modify the Scale settings for, in the Studies to Graph list.
  3. Press the Settings button.
  4. Select the Settings and Inputs tab.
  5. Press the Scale button.
  6. Adjust the settings as required.
  7. Press OK. Press OK.
  8. To quickly access the Study Settings window for a study refer to Quick Access to Study Settings on the Chart Studies page.

Scale Type

Linear

With a linear scale, all values in the graph are evenly spaced across the region.

Logarithmic

With a logarithmic scale, smaller values take more space in the region as compared with higher values. This gives a clearer view of a graph when there has been a large percentage increase in prices over a period of time.

It is possible to easily change to a logarithmic scale through Chart >> Linear/Logarithmic Scale. Or you can add the Logarithmic Toolbar button through Global Settings >> Customize Toolbars >> Toolbar #.

When a logarithmic scale is enabled for the chart you will see Log displayed in the lower right of the chart.

Scale Range

Automatic

The top and bottom values for the scale range for the price or study graph are automatically set. The top and bottom values are the highest high and the lowest low of all graphs in the region which have their scale range set to Automatic.

Independent

The top and bottom values for the scale for the graph are automatically set and are determined from the study graph itself and not other graphs which are in the same region. This allows you to overlay multiple graphs in a region which have different scale ranges and values. For example you can overlay a stochastic on the main price graph in region 1. To do this you would set the stochastic to display in region 1 and set its scale to Independent.

The Independent scale is useful when overlying studies on the main price graph or over other study graphs. It is the default scale for the Overlay study. A graph that uses this scale range type uses a completely Independent scale. Graph values will not match the same values on other graphs in the same region. Graph lines that are over a certain position on another graph in the region may not be over that same position as you change bar spacing, scroll the chart to a different position, or change the size of the window.

Constant Range

When the Constant Range option is enabled, the scale is a constant range centered around the midpoint of the high and low of the last visible bar. The Constant Range value entered represents the amount above and below this midpoint price. If Auto-Centering is enabled, the chart will be centered at every chart update and when scrolling the chart. Otherwise, you will need to manually re-center the chart graph if it goes off the window by pressing the END key on your keyboard, double clicking on the scale area on the right, or scrolling the chart.

User Defined

The top and bottom values for the scale range for the graph are set to the values you enter in the Top of Range and Bottom of Range text boxes in this window.

Same As Region

The top and bottom values for the scale range for the graph are the same as other graphs in the Chart Region which are set to Automatic. The highest high or lowest low of the graph does not affect the top and bottom values for the scale range.

This keeps a study with a wider range from compressing the other graphs in the same Chart Region. This is a useful Scale Range type to use for overlaying moving averages and other studies on the main price graph when those studies cause the main price graph to become compressed because the studies occupy a wider range than the main price graph.

When using this Scale Range type with a study which is displayed in Chart Region 1, the main price graph needs to be set to Automatic and the study needs to be set to Same As Region.

Automatic Zero-Based

This scale range is similar to Automatic where the top and bottom values for the scale range for the graph are automatically set based upon the displayed range of values for the graph. The difference is that the bottom value is always zero. By default this is used with the Volume study. When this Scale Range Type is used, neither Interactive Scale Range or Interactive Scale Move Interactive Scaling methods will work.

Scale Increment

The Scale Increment setting is for the increment between the scale number labels displayed in the Values Scale on the right and left side of the chart. Set this to 0 for automatic labeling. In the case of the main price graph, the automatically set increment is always a multiple of the chart Tick Size.

Horizontal Grid Line Increment

The Horizontal Grid Line Increment displays and sets the increment between horizontal grid lines in the chart region of the main price graph or study that you are modifying the scale settings for. Set this to 0 to use the same value as the Scale Increment.

Constant Range Scale with Auto-Center: Use Last Price Only

When the Scale Range is set to Constant Range Auto-Center and this option is enabled, the Last price of the last visible bar is the center point of the constant range scale. When this option is disabled, the center point of the constant range is the midpoint of the high and low of the last visible bar.

Constant Range Scale: Keep Last Bar in View

When the Scale Range is set to Constant Range or Constant Range Auto-Center , then the vertical scale will be adjusted to always ensure that the High and Low of the last bar is always in view on the chart.

However, if you have used Interactive Scale Move to move the chart up or down, the High and Low could possibly move outside of the visible view in which case this option cannot keep the last bar High or Low within view. In this case right-click on the scale of numbers on the right side of the chart and select Reset to remove any Interactive Scale Move adjustments or double-click the scale on the right side of the chart.

Constant Range Scale: Re-Center on Chart Scroll

The default for this option is enabled.

When Constant Range Scale: Re-Center on Chart Scroll is disabled, and the Scale Range is set to Constant Range without Auto Centering enabled, then when the chart is scrolled, the scale will not be automatically re-centered.

Effect Of Window Sizes On Graph Display

With larger window sizes or decreased bar spacing more of a study graph is visible which increases the range of the graph. The range is the highest high minus the lowest low of the study graph values displayed. Areas of the study graph which have a small range will appear to be more compressed compared with that same area in a smaller window size or with increased bar spacing because under these conditions the chart region will display a smaller range of values making the area of the study more zoomed.

Basing Scale Only on Price Bars

Sometimes you may not want to have studies which are displayed in Chart Region 1 where the main price graph is, affect the scale of the main price graph. For example, in the image to the right you can see the Moving Average study affect the price scale.

To prevent this, set the Scale Range for the study to be Same As Region. For instructions to set the scale for a study, refer to Opening the Scale Window For a Study.

X & Y Constant Relationship Scaling

X & Y Constant Relationship Scaling maintains a constant relationship between the right side Values Scale and the Time Scale or bar spacing. Therefore, when you change the Values Scale by expanding or compressing the price range, the Time Scale or bar spacing will automatically adjust to maintain the original ratio between the two. Likewise, when you alter the bar spacing in the chart, which is done by adjusting the spacing for the Time Scale, the Values Scale will automatically expand or compress to maintain the original ratio between the two.

To use X and Y Constant Relationship Scaling, right-click on the Values Scale on the right side of the chart and select Set X & Y Constant Relationship . This is the only way to enable this feature. It cannot be enabled through the Scale Window for the main price graph.

To disable use of X and Y Constant Relationship Scaling, right-click on the Values Scale on the right side of the chart and uncheck Set X & Y Constant Relationship . You may also want to right-click again on the right side Values Scale and set the Scale Range back to Automatic since it will have been changed to Constant Range .

Select Chart >> Chart Settings >> Scale to set the number of Bars and Values Range settings for X and Y Constant Relationship Scaling if you want to alter them. These settings establish the ratio between the Time Scale or bar spacing and the Values Scale. As you alter the Values Scale or the bar spacing in the chart, this ratio is used to change the other dimension to maintain the original ratio. These values are automatically set when you select Set X & Y Constant Relationship on the Values Scale menu which is displayed by right clicking on the Values Scale on the right side of the chart.

Only the main price graph supports Constant Relationship Scaling.

Only the Constant Range Scale Range types for the main price graph support Constant Relationship Scaling.

This feature requires a software service package that includes the Additional Features .

Interactive Scaling

Interactive Scale Range - Expand/Compress Scale

You can left click and drag your mouse pointer up and down in the Values Scale on the right side of the chart expand and compress the scale. The Values Scale is the column of numbers on the right side of the chart. When you are using studies on the chart that are displayed below the main price graph, then there are multiple Chart Regions used. Each region has its own independent Values Scale. Therefore, you can invoke scale changes for each of these separate regions and they are all independent from each other. Right-click with your mouse pointer over the Values Scale in the appropriate chart region to bring up the Scale Menu. Make sure Interactive Scale Range is selected. When you left-click and drag the Values Scale it will expand and compress the scale. Refer to the images below.

Interactive Scale Move - Move Scale Up and Down

You can left click and drag your mouse pointer up and down in the Values Scale on the right side of the chart to move the chart up and down. The Values Scale is the column of numbers on the right side of the chart. When you are using studies on the chart that are displayed below the main price graph, then there are multiple Chart Regions used. Each region has its own independent Values Scale. Therefore, you can invoke scale changes for each of these separate regions and they are all independent from each other. Right-click with your mouse pointer over the Values Scale in the appropriate chart region to bring up the Scale Menu. Make sure Interactive Scale Move is selected. When you left-click and drag the Values Scale it will move the Chart Region up and down. Refer to the images below.

The Hand tool can be set to move the chart up and down as well. For more information, refer to Hand Tool.

Resetting the Scale

You can double-click with your mouse pointer on the Values Scale for a Chart Region on the right side of the chart to reset the scale for that region to the default. Alternatively, you can right-click over the Values Scale for a Chart Region and select Reset Scale to reset it back to the default. Select Chart >> Reset Scale on the menu to reset the scale for all Chart Regions back to the default at once.

Locking the Scale

You can lock the Values Scale to prevent the Values Scale from being modified at all by clicking and dragging, by selecting Interactive Scale Locked on the right-click Scale Menu. The Reset and Lock menu option will first reset the scale before locking it. Right click with your mouse pointer over the Values Scale on the right side of the chart to bring up the Scale Menu.

Inverting the Scale Mode

You temporarily invert the scale mode, use Interactive Scale Range when Interactive Scale Move is selected and the opposite, by holding down the Ctrl key on your keyboard while dragging the Values Scale with the mouse pointer.

Instructional Images


*Last modified Friday, 27th June, 2014.