The formula for the scale, what is the formula for the scale?

The formula is: scale bar = ratio of the distance on the graph to the actual distance.

The scale bar represents the ratio of the length of a line segment on the diagram to the actual length of the corresponding line segment on the ground.

1. There are three ways to represent the scale: numerical scale, graphic scale and text scale. Generally speaking, large-scale maps are detailed and geometrically accurate, and can be used for on-map measurements. Small-scale maps are highly generalized and not suitable for on-map measurements.

2. It is expressed by the formula: scale bar = distance on the figure and actual distance. There are usually three representations of the scale.

Numeric (a.k.a. numeric scale) is a scale or fraction of numbers that represents the size of the scale. For example: 1 50,000,000, or 1 50,000,000.

3. Line segment type (also known as scale), draw a line segment on the map, and indicate the actual distance represented by 1 cm on the map. Textual type, directly write 1 cm on the map on the map to represent the distance of the ground in many meters, for example: 1 cm on the map is equivalent to 500 meters on the ground, or 1/50,000.

4. The three representations are interchangeable. Mandatory units. When drawing maps and other plans, you need to reduce (or expand) the actual distance by a certain ratio, and then draw it on the drawing.

In this case, it is necessary to determine the ratio of the distance on the graph to the corresponding actual distance. The ratio of the distance on the graph to the actual distance of a graph is called the scale of the diagram.

The ratio of the distance on the graph to the actual distance.

Scale barThe formula is: scale bar = distance on the graph actual distance. Distance on the graph = actual distance scale; Actual distance = distance on the graph scale; In the scale calculation, it is necessary to pay attention to the conversion between units, unit conversion:

Use centimeters on the map, kilometers on the field, centimeters for kilometers, and five zeros; Kilometers for centimeters, plus two zeros on the basis of thousands.

Scale bar in three forms:1) Numeric formula, which uses the scale formula or fractional formula of numbers to express the size of the scale bar. For example, 1 cm on the map represents the distance of 500 kilometers in the field, which can be written:

1 50 000 000 or write: 1 in 50 million.

2) Line segment type, draw a line segment on the map, and indicate the actual distance represented by 1 cm on the map.

Scale bar = distance on the graph Actual distance, distance on the graph = actual distance Scale, actual distance = distance on the graph scale.

Distance on the graph = actual distance scale;

Scale Formula:

Distance on the graph = actual distance scale;

Actual distance = distance on the graph scale;

Scale bar = distance on the graph Actual distance.

In the scale calculation, it is necessary to pay attention to the conversion between units, unit conversion: use centimeters on the map, kilometers on the field, centimeters for kilometers, and go to five zeros; Kilometers for centimeters, plus two zeros on the basis of thousands.

Interpretation of the scale size

The size of the scale is the size of the ratio. The larger the scale denominator, the smaller the scale, and the smaller the denominator, the larger the scale.

Interpretation of the scale size and actual scope and content in detail.

1. The same range: the larger the scale, the larger the area of the map, and the more detailed the content; The smaller the scale, the smaller the area and the more concise the content.

2. The same scale: the larger the range, the larger the map size.

3. The same map: the larger the scale, the smaller the field scope of the map, the more detailed the content, and the higher the accuracy; The smaller the scale, the larger the actual range, the simpler the content, and the lower the accuracy.

Distance on the map: Actual distance =Scale bar

Whether you zoom in or out, the concept of scale remains the same, and it represents the ratio of the length of the segment of the line to the actual distance length. We can write it like this (see ** for a few deformations derived from the formula):

Scale bar = distance on the graph: actual distance (scale).

Scale bar = distance on the graph Actual distance (division).

Scale = Distance on Graph Actual distance (in fractional form).

From these three equations, remember that the "distance on the graph" is the proportional preterm, the dividend.

Molecule; The "Actual Distance" is the post-proportion, divisor, and denominator.

When you see something like :500, the first term is a scale of "1".

You know that it is a reduced scale; When you see a scale like :1, the latter item is a scale of "1", you know that it is an enlarged scale. This is the first question to be asked: how to distinguish whether the scale is shrinking or relaxing.

Why doesn't the scale have a unit:

Scale bar = distance on the graph Actual distance.

Obviously, the "distance on the graph" and the "actual distance" are all units, but they are divided by each other and are reduced to each other. At the same time, there is a very important note here, when calculating, you must convert the units of "distance on the graph" and "actual distance" to the same, otherwise there is no way to make an appointment.

Scale barFormula: Scale bar Distance on the map Field distance.

The scale bar indicates the degree to which the distance on the map is reduced or expanded compared to the distance on the ground. The formula is: scale bar = ratio of the distance on the graph to the actual distance. There are three types of scale representations: numeric, linear, and literal. The three representations are interchangeable.

Generally speaking, large-scale maps, with detailed content and high geometric accuracy, can be used for on-map measurements. Small-scale maps are highly generalized and not suitable for on-map measurements.

Scale Role:

According to the scale on the map, the physical distance between two places on the map can be measured; According to the actual distance and scale of the two places, the distance on the map of the two places can be calculated; The scale can be calculated based on the distance on the map and the actual distance between the two places.

Depending on the purpose of the map, the size of the area to be represented, the size of the map sheet, and the details of the content of the map, the scale used for mapping varies from large to small. The numerator in the map scale is usually 1, the denominator.

The larger it is, the smaller the scale.

Maps that are usually larger than 1/100,000 are called large-scale maps; Maps with a scale between 1/100,000 and 1/1 million, are called medium-scale maps; Maps with a scale of less than one part per million are called small-scale maps.

Summary. Scale Formula:

Distance on the graph = actual distance scale;

Actual distance Scale bar = distance on the graph.

Distance on the graph Scale = actual distance.

What is the formula for the scale?

Scale formula: Absolute distance base tour on the map: actual distance = actual distance of the scale bar Scale bar = distance on the map distance on the map scale bar = actual distance to fight for good sales.

There are three ways to represent the scale: numerical, line segment source wisdom, and text. The three representations are interchangeable.

Digital Hunger: Represents the size of the scale in a proportional or fractional formula of numbers.

For example, on a map, 1 centimeter represents the distance of 500 kilometres from the field, which can be written: 1 50 000 000, or 1 50 000 000, or 1 in 50 million.

Line Segment: Draw a line segment on the map and indicate the distance from the field represented by 1 cm on the map.

Example: Note 1 to 500 on the flat chart, how to calculate.

The scale of 1:500 indicates that the distance between the touches on the map is 1 cm, and the actual distance is 500 cm. The straight-line distance measured on the graph is multiplied by 100 to be the actual straight-line distance, and the product of the laughing eggplant on the figure is multiplied by 100*100 is the actual surface empty product.

The oblique distance, and the vertical height of how to calculate the grate.

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The slope is 2o degrees, and the length is 1o meters.

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