Beispiel: Konvertieren von Einheiten in Diagrammen

Diagramme > Arbeiten mit Diagrammen > Beispiel: Konvertieren von Einheiten in Diagrammen

Ändern Sie die Einheiten in einem Achsenausdruck.

1. Definieren Sie eine Bereichsvariable und eine Funktion mit Einheiten.

2. Grafische Darstellung der Funktion.

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              <math>
                <id xml:space="preserve" xmlns="http://schemas.mathsoft.com/math50">x</id>
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              <math>
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        </xAxis>
        <yAxis rank="1" legend-position="PlotBoundaryLeft" start="0" end="5">
          <axisLine position="origin" positionticmark="0" legendWidth="110.68" />
          <axisGrid>
            <gridFrequency>11</gridFrequency>
            <gridLabels display="true" />
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            <tickMarks display="true" />
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          <axisLabel />
          <markers />
          <numberFormat>
            <decimal precision="3" show-trailing-zeros="false" radix="dec" imaginary-value="i" />
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                  <id xml:space="preserve">dist</id>
                  <id xml:space="preserve">x</id>
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              <math>
                <id labels="UNIT" xml:space="preserve" xmlns="http://schemas.mathsoft.com/math50">m</id>
              </math>
            </plotEquation>
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Die Teilstrichwerte werden in den Basiseinheiten des Einheitensystems angezeigt, das Sie verwenden, und zwar unabhängig von den eingegebenen Einheiten.

3. Ändern Sie die Einheiten, in denen der y-Achsenausdruck geplottet wird, indem Sie die Abkürzung für Meter (m) aus dem Platzhalter für die Einheit löschen und die Abkürzung für Inch in in den leeren Platzhalter eingeben.

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    <xyPlot>
      <title class="- topic/title " wwtype:type="Paragraph" xmlns:wwtype="urn:WebWorks-Type-Schema" />
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      <traces>
        <trace resultRef="13">
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      </traces>
      <graph-size width="441.6" height="254.4" />
      <axes>
        <xAxis rank="1" legend-position="PlotBoundaryBottom" start="0" end="5">
          <axisLine position="origin" positionticmark="0" legendWidth="60.93" />
          <axisGrid>
            <gridFrequency>11</gridFrequency>
            <gridLabels display="true" />
            <gridLines />
            <tickMarks display="true" />
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          <axisLabel />
          <markers />
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            <decimal precision="3" show-trailing-zeros="false" radix="dec" imaginary-value="i" />
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                <id xml:space="preserve" xmlns="http://schemas.mathsoft.com/math50">x</id>
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            </plotEquation>
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          <xyDomain scale-type="linear" auto-scale="true">
            <startValue>
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            <endValue>
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          </xyDomain>
        </xAxis>
        <yAxis rank="1" legend-position="PlotBoundaryLeft" start="0" end="200">
          <axisLine position="origin" positionticmark="0" legendWidth="111.65" />
          <axisGrid>
            <gridFrequency>11</gridFrequency>
            <gridLabels display="true" />
            <gridLines />
            <tickMarks display="true" />
          </axisGrid>
          <axisLabel />
          <markers />
          <numberFormat>
            <decimal precision="3" show-trailing-zeros="false" radix="dec" imaginary-value="i" />
          </numberFormat>
          <plotEquations>
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                  <id xml:space="preserve">dist</id>
                  <id xml:space="preserve">x</id>
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              <math>
                <id labels="UNIT" xml:space="preserve" xmlns="http://schemas.mathsoft.com/math50">in</id>
              </math>
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4. Plotten Sie die gleiche Funktion erneut, fügen Sie dieses Mal jedoch in den Platzhalter für die Einheit einen Skalierungsfaktor ein, anstatt die Einheiten zu konvertieren.

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            <gridLabels display="true" />
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        <yAxis rank="1" legend-position="PlotBoundaryLeft" start="0" end="200">
          <axisLine position="ticknumberlock" positionticmark="0" legendWidth="136.416666666667" />
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            <gridLabels display="true" />
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            <tickMarks display="true" />
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          <axisLabel />
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                <apply xmlns="http://schemas.mathsoft.com/math50">
                  <id xml:space="preserve">dist</id>
                  <id xml:space="preserve">x</id>
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              <math>
                <id labels="UNIT" xml:space="preserve" xmlns="http://schemas.mathsoft.com/math50">in</id>
              </math>
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            <plotEquation>
              <math>
                <apply xmlns="http://schemas.mathsoft.com/math50">
                  <id xml:space="preserve">dist</id>
                  <id xml:space="preserve">x</id>
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              <math>
                <apply xmlns="http://schemas.mathsoft.com/math50">
                  <scale />
                  <real>0.1</real>
                  <id labels="UNIT" xml:space="preserve">m</id>
                </apply>
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Diese Spuren stellen gleichwertige Zahlen dar. Der zweite Punkt der ersten Spur liegt z.B. bei 79 in = 2 Meter. Auf der zweiten Spur liegt er bei 20 * 0.1 m = 2 Meter.

5. Fügen Sie zwei horizontale Markierungen ein, um die beiden obigen Datenpunkte zu kennzeichnen.

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            <gridLabels display="true" />
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            <tickMarks display="true" />
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          <axisLabel />
          <markers />
          <plotEquations>
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              <math>
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        <yAxis rank="1" legend-position="PlotBoundaryLeft" start="0" end="200">
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            <gridFrequency>11</gridFrequency>
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              <real xmlns="http://schemas.mathsoft.com/math50">79</real>
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              <math>
                <id labels="UNIT" xml:space="preserve" xmlns="http://schemas.mathsoft.com/math50">in</id>
              </math>
            </plotEquation>
            <plotEquation>
              <math>
                <apply xmlns="http://schemas.mathsoft.com/math50">
                  <id xml:space="preserve">dist</id>
                  <id xml:space="preserve">x</id>
                </apply>
              </math>
              <math>
                <apply xmlns="http://schemas.mathsoft.com/math50">
                  <scale />
                  <real>0.1</real>
                  <id labels="UNIT" xml:space="preserve">m</id>
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        </yAxis>
      </axes>
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</region>

Teilstrich- und die Legendenwerte haben keine Einheiten. Nur Achsenausdrücke können Einheiten haben.

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