User (Legacy) Posted August 24, 2005 Report Share Posted August 24, 2005 Hi, I am drawing a straight horizontal line graph (y = some constant) The constant is a floating number (example 2.37). I cann't seem to get the y axis's label to show this value at the "right spot" (where this line graph is) -- see attachment. Thanks, Ming Link to comment Share on other sites More sharing options...
Software FX Posted August 24, 2005 Report Share Posted August 24, 2005 Looks like a rounding problem. What is the scale in your Y-Axis (Min and Max) ? If you have a very small scale, the difference between 2.370 and 2.374 may be big, however the label for both is the same if you are using two decimals (2.37). I think what's happening is that the label you are seeing is for 2.37?, make sure your Min, Max and Step (if you are setting one) are set to values that are ROUNDED to 2 decimals, otherwise the labels themselves may not be rounded. -- Francisco Padron www.chartfx.com Link to comment Share on other sites More sharing options...
User (Legacy) Posted August 24, 2005 Author Report Share Posted August 24, 2005 Here is the code that produces the chart. I set the MIN and MAX to be the y value plus/minus a constant. I tried a few combinations but still cann't get the correct label. Thanks again. ming int series = 1; chart1.OpenData(COD.Values, series, (int)COD.Unknown); chart1.OpenData(COD.XValues, series, (int)COD.Unknown); chart1.AxisY.DataFormat.Decimals = 2; chart1.AxisY.LabelsFormat.Decimals = 2; double avg = 2.37; double stddev = .72; chart1.AxisY.Min = avg - stddev; chart1.AxisY.Max = avg + stddev; //chart1.AxisY.Step = stddev; //chart1.AxisY.MinorStep = stddev; //chart1.AxisY.FirstLabel = chart1.AxisY.Min; for (int i = 0; i < series; i++) { int count = 2; double val = avg; chart1.AxisY.Label.Add(val.ToString()); //chart1.YLeg.Add(val.ToString()); for (int k = 0; k < count; k += 1) { chart1.Value[i, k] = val; chart1.XValue[i, k] = k; } } chart1.CloseData(COD.XValues); chart1.CloseData(COD.Values); "SoftwareFX Support" <noreply@softwarefx.com> wrote in message news:pKKwlxNqFHA.1992@webserver3.softwarefx.com... > Looks like a rounding problem. > > What is the scale in your Y-Axis (Min and Max) ? > > If you have a very small scale, the difference between 2.370 and 2.374 may > be big, however the label for both is the same if you are using two decimals > (2.37). > > I think what's happening is that the label you are seeing is for 2.37?, make > sure your Min, Max and Step (if you are setting one) are set to values that > are ROUNDED to 2 decimals, otherwise the labels themselves may not be > rounded. > > -- > Francisco Padron > www.chartfx.com > > Link to comment Share on other sites More sharing options...
User (Legacy) Posted August 25, 2005 Author Report Share Posted August 25, 2005 Hi again, did you find anything from the code? I need to resolve this quickly... Thanks, Ming "SoftwareFX Support" <noreply@softwarefx.com> wrote in message news:pKKwlxNqFHA.1992@webserver3.softwarefx.com... > Looks like a rounding problem. > > What is the scale in your Y-Axis (Min and Max) ? > > If you have a very small scale, the difference between 2.370 and 2.374 may > be big, however the label for both is the same if you are using two decimals > (2.37). > > I think what's happening is that the label you are seeing is for 2.37?, make > sure your Min, Max and Step (if you are setting one) are set to values that > are ROUNDED to 2 decimals, otherwise the labels themselves may not be > rounded. > > -- > Francisco Padron > www.chartfx.com > > Link to comment Share on other sites More sharing options...
User (Legacy) Posted August 26, 2005 Author Report Share Posted August 26, 2005 (this answer appeared in a different thread, but belongs here, I think): Ok. The problem is you are adding a String label with the line: chart1.YLeg.Add(val.ToString()); Nowhere you are specifying where this label should go. The way String labels work in a numeric axis is through the LabelValue property, this property makes the equivalence between the index of the label (0 in this case) and the logical value in the axis, these labels are evenly spaced. If you want to label an arbitrary value, completely independent of Min/Max and other Axis labels, the best option for you is a Constant Line. The following code adds a constant line displaying a label for the value 2.37: ConstantLine cl = new ConstantLine(); cl.Value = val; cl.Text = val.ToString(); cl.Flags |= ConstantFlag.HideLine | ConstantFlag.OutsideText; chart1.ConstantLines.Add(cl); Use this code INSTEAD of the YLeg code. Note that there is no guarantee that this label won't overlap another axis labels. If this is the ONLY label you want in your axis, you may hide the regular axis labels by doing: chart1.AxisY.Style |= AxisStyle.HideText; -- Francisco Padron www.chartfx.com Link to comment Share on other sites More sharing options...
User (Legacy) Posted August 26, 2005 Author Report Share Posted August 26, 2005 Thanks for the repost.... ConstantLine ONLY works when there is other series in the chart. In my case, I don't have data series. The line is my data. Thanks again. Ming "Holger Wilken" <holger.wilken@megatel.de> wrote in message news:wlxzWpkqFHA.1724@webserver3.softwarefx.com... > (this answer appeared in a different thread, but belongs here, I think): > > Ok. The problem is you are adding a String label with the line: > > chart1.YLeg.Add(val.ToString()); > > Nowhere you are specifying where this label should go. > > The way String labels work in a numeric axis is through the LabelValue > property, this property makes the equivalence between the index of the label > (0 in this case) and the logical value in the axis, these labels are evenly > spaced. > > If you want to label an arbitrary value, completely independent of Min/Max > and other Axis labels, the best option for you is a Constant Line. > > The following code adds a constant line displaying a label for the value > 2.37: > > ConstantLine cl = new ConstantLine(); > > cl.Value = val; > > cl.Text = val.ToString(); > > cl.Flags |= ConstantFlag.HideLine | ConstantFlag.OutsideText; > > chart1.ConstantLines.Add(cl); > > Use this code INSTEAD of the YLeg code. Note that there is no guarantee > that this label won't overlap another axis labels. If this is the ONLY label > you want in your axis, you may hide the regular axis labels by doing: > > chart1.AxisY.Style |= AxisStyle.HideText; > > -- > Francisco Padron > www.chartfx.com > > > > Link to comment Share on other sites More sharing options...
User (Legacy) Posted August 26, 2005 Author Report Share Posted August 26, 2005 I think, I found a way to do this. I use the CustemSteps property, the label shows exactly where i want it to be.... Thanks for your response. "Holger Wilken" <holger.wilken@megatel.de> wrote in message news:wlxzWpkqFHA.1724@webserver3.softwarefx.com... > (this answer appeared in a different thread, but belongs here, I think): > > Ok. The problem is you are adding a String label with the line: > > chart1.YLeg.Add(val.ToString()); > > Nowhere you are specifying where this label should go. > > The way String labels work in a numeric axis is through the LabelValue > property, this property makes the equivalence between the index of the label > (0 in this case) and the logical value in the axis, these labels are evenly > spaced. > > If you want to label an arbitrary value, completely independent of Min/Max > and other Axis labels, the best option for you is a Constant Line. > > The following code adds a constant line displaying a label for the value > 2.37: > > ConstantLine cl = new ConstantLine(); > > cl.Value = val; > > cl.Text = val.ToString(); > > cl.Flags |= ConstantFlag.HideLine | ConstantFlag.OutsideText; > > chart1.ConstantLines.Add(cl); > > Use this code INSTEAD of the YLeg code. Note that there is no guarantee > that this label won't overlap another axis labels. If this is the ONLY label > you want in your axis, you may hide the regular axis labels by doing: > > chart1.AxisY.Style |= AxisStyle.HideText; > > -- > Francisco Padron > www.chartfx.com > > > > Link to comment Share on other sites More sharing options...
Software FX Posted August 27, 2005 Report Share Posted August 27, 2005 > ConstantLine ONLY works when there is other series in the chart I don't know what you mean by this. > In my case, I don't have data series Yes, you do, you have one data series, otherwise there would be no chart. You are doing: chart1.OpenData(COD.Values, series, (int)COD.Unknown); So you have <series> number of series. -- Francisco Padron www.chartfx.com "Ming Goi" <mgoi@angoss.com> wrote in message news:hV5yGNoqFHA.1992@webserver3.softwarefx.com... > Thanks for the repost.... > ConstantLine ONLY works when there is other series in the chart. > In my case, I don't have data series. The line is my data. > Thanks again. > Ming > > "Holger Wilken" <holger.wilken@megatel.de> wrote in message > news:wlxzWpkqFHA.1724@webserver3.softwarefx.com... >> (this answer appeared in a different thread, but belongs here, I think): >> >> Ok. The problem is you are adding a String label with the line: >> >> chart1.YLeg.Add(val.ToString()); >> >> Nowhere you are specifying where this label should go. >> >> The way String labels work in a numeric axis is through the LabelValue >> property, this property makes the equivalence between the index of the > label >> (0 in this case) and the logical value in the axis, these labels are > evenly >> spaced. >> >> If you want to label an arbitrary value, completely independent of >> Min/Max >> and other Axis labels, the best option for you is a Constant Line. >> >> The following code adds a constant line displaying a label for the value >> 2.37: >> >> ConstantLine cl = new ConstantLine(); >> >> cl.Value = val; >> >> cl.Text = val.ToString(); >> >> cl.Flags |= ConstantFlag.HideLine | ConstantFlag.OutsideText; >> >> chart1.ConstantLines.Add(cl); >> >> Use this code INSTEAD of the YLeg code. Note that there is no guarantee >> that this label won't overlap another axis labels. If this is the ONLY > label >> you want in your axis, you may hide the regular axis labels by doing: >> >> chart1.AxisY.Style |= AxisStyle.HideText; >> >> -- >> Francisco Padron >> www.chartfx.com >> >> >> >> > > Link to comment Share on other sites More sharing options...
User (Legacy) Posted September 1, 2005 Author Report Share Posted September 1, 2005 Hi again, I still have problem. The CustomSteps seems to work for positive (Min/Max) only. Please take a look at the attach image. The blue labels are the ones, I want. I marked RED X for the ones, I don't want. If you can give a sample code for this would be great. Thanks again. Here is the code that produces that chart: int series = 3; chart1.OpenData(COD.Values, series, (int)COD.Unknown); chart1.OpenData(COD.XValues, series, (int)COD.Unknown); chart1.AxisY.DataFormat.Decimals = 2; chart1.AxisY.LabelsFormat.Decimals = 2; double avg = 9.61; double stddev = 2.57; chart1.AxisY.Min = -6.95; chart1.AxisY.Max = 14.09; chart1.AxisX.Line.Style = System.Drawing.Drawing2D.DashStyle.Dash; double[] steps = new double[4]; int n = 0; steps[n++] = avg - stddev - chart1.AxisY.Min; steps[n++] = stddev; steps[n++] = stddev; steps[n++] = chart1.AxisY.Max - avg - stddev; for (int i = 0; i < series; i++) { int count = 2; double val; if (i == 0) val = avg - stddev; else if (i == 1) val = avg; else val = avg + stddev; for (int k = 0; k < count; k += 1) { chart1.Value[i, k] = val; chart1.XValue[i, k] = k; } } chart1.AxisY.CustomSteps = steps; chart1.CloseData(COD.XValues); chart1.CloseData(COD.Values); "Ming Goi" <mgoi@angoss.com> wrote in message news:ikW1EurqFHA.1992@webserver3.softwarefx.com... > I think, I found a way to do this. > I use the CustemSteps property, the label shows exactly where i want it to > be.... > Thanks for your response. > > "Holger Wilken" <holger.wilken@megatel.de> wrote in message > news:wlxzWpkqFHA.1724@webserver3.softwarefx.com... > > (this answer appeared in a different thread, but belongs here, I think): > > > > Ok. The problem is you are adding a String label with the line: > > > > chart1.YLeg.Add(val.ToString()); > > > > Nowhere you are specifying where this label should go. > > > > The way String labels work in a numeric axis is through the LabelValue > > property, this property makes the equivalence between the index of the > label > > (0 in this case) and the logical value in the axis, these labels are > evenly > > spaced. > > > > If you want to label an arbitrary value, completely independent of Min/Max > > and other Axis labels, the best option for you is a Constant Line. > > > > The following code adds a constant line displaying a label for the value > > 2.37: > > > > ConstantLine cl = new ConstantLine(); > > > > cl.Value = val; > > > > cl.Text = val.ToString(); > > > > cl.Flags |= ConstantFlag.HideLine | ConstantFlag.OutsideText; > > > > chart1.ConstantLines.Add(cl); > > > > Use this code INSTEAD of the YLeg code. Note that there is no guarantee > > that this label won't overlap another axis labels. If this is the ONLY > label > > you want in your axis, you may hide the regular axis labels by doing: > > > > chart1.AxisY.Style |= AxisStyle.HideText; > > > > -- > > Francisco Padron > > www.chartfx.com > > > > > > > > > > Link to comment Share on other sites More sharing options...
User (Legacy) Posted September 2, 2005 Author Report Share Posted September 2, 2005 Ming, Have you tried Sections? mySectionCount++; mySection = FormChart.AxisY.Sections[ mySectionCount ]; mySection.From = 2.37; mySection.To = 2.37; mySection.Grid.Color = System.Drawing.Color.Black; mySection.Gridlines = true; mySection.Grid.Width = 2; - LNS Ming Goi wrote: > Hi again, > I still have problem. > The CustomSteps seems to work for positive (Min/Max) only. > Please take a look at the attach image. > The blue labels are the ones, I want. > I marked RED X for the ones, I don't want. > If you can give a sample code for this would be great. > Thanks again. > > Here is the code that produces that chart: > > int series = 3; > chart1.OpenData(COD.Values, series, (int)COD.Unknown); > chart1.OpenData(COD.XValues, series, (int)COD.Unknown); > chart1.AxisY.DataFormat.Decimals = 2; > chart1.AxisY.LabelsFormat.Decimals = 2; > double avg = 9.61; > double stddev = 2.57; > > chart1.AxisY.Min = -6.95; > chart1.AxisY.Max = 14.09; > > chart1.AxisX.Line.Style = System.Drawing.Drawing2D.DashStyle.Dash; > > double[] steps = new double[4]; > int n = 0; > steps[n++] = avg - stddev - chart1.AxisY.Min; > steps[n++] = stddev; > steps[n++] = stddev; > steps[n++] = chart1.AxisY.Max - avg - stddev; > for (int i = 0; i < series; i++) > { > int count = 2; > double val; > if (i == 0) > val = avg - stddev; > else if (i == 1) > val = avg; > else > val = avg + stddev; > > for (int k = 0; k < count; k += 1) > { > chart1.Value[i, k] = val; > chart1.XValue[i, k] = k; > } > } > > chart1.AxisY.CustomSteps = steps; > chart1.CloseData(COD.XValues); > chart1.CloseData(COD.Values); > "Ming Goi" <mgoi@angoss.com> wrote in message > news:ikW1EurqFHA.1992@webserver3.softwarefx.com... > >>I think, I found a way to do this. >>I use the CustemSteps property, the label shows exactly where i want it to >>be.... >>Thanks for your response. >> >>"Holger Wilken" <holger.wilken@megatel.de> wrote in message >>news:wlxzWpkqFHA.1724@webserver3.softwarefx.com... >> >>>(this answer appeared in a different thread, but belongs here, I think): >>> >>>Ok. The problem is you are adding a String label with the line: >>> >>>chart1.YLeg.Add(val.ToString()); >>> >>>Nowhere you are specifying where this label should go. >>> >>>The way String labels work in a numeric axis is through the LabelValue >>>property, this property makes the equivalence between the index of the >> >>label >> >>>(0 in this case) and the logical value in the axis, these labels are >> >>evenly >> >>>spaced. >>> >>>If you want to label an arbitrary value, completely independent of > > Min/Max > >>>and other Axis labels, the best option for you is a Constant Line. >>> >>>The following code adds a constant line displaying a label for the value >>>2.37: >>> >>>ConstantLine cl = new ConstantLine(); >>> >>>cl.Value = val; >>> >>>cl.Text = val.ToString(); >>> >>>cl.Flags |= ConstantFlag.HideLine | ConstantFlag.OutsideText; >>> >>>chart1.ConstantLines.Add(cl); >>> >>>Use this code INSTEAD of the YLeg code. Note that there is no guarantee >>>that this label won't overlap another axis labels. If this is the ONLY >> >>label >> >>>you want in your axis, you may hide the regular axis labels by doing: >>> >>>chart1.AxisY.Style |= AxisStyle.HideText; >>> >>>-- >>>Francisco Padron >>>www.chartfx.com >>> >>> >>> >>> >> >> > > Link to comment Share on other sites More sharing options...
User (Legacy) Posted September 2, 2005 Author Report Share Posted September 2, 2005 Thanks for the suggestion...but it doesn't work. "LNS" <ianj_lns@lns-systems.com> wrote in message news:SQCN8W4rFHA.1724@webserver3.softwarefx.com... > Ming, > > Have you tried Sections? > > mySectionCount++; > mySection = FormChart.AxisY.Sections[ mySectionCount ]; > mySection.From = 2.37; > mySection.To = 2.37; > mySection.Grid.Color = System.Drawing.Color.Black; > mySection.Gridlines = true; > mySection.Grid.Width = 2; > > > - LNS > > > > Ming Goi wrote: > > Hi again, > > I still have problem. > > The CustomSteps seems to work for positive (Min/Max) only. > > Please take a look at the attach image. > > The blue labels are the ones, I want. > > I marked RED X for the ones, I don't want. > > If you can give a sample code for this would be great. > > Thanks again. > > > > Here is the code that produces that chart: > > > > int series = 3; > > chart1.OpenData(COD.Values, series, (int)COD.Unknown); > > chart1.OpenData(COD.XValues, series, (int)COD.Unknown); > > chart1.AxisY.DataFormat.Decimals = 2; > > chart1.AxisY.LabelsFormat.Decimals = 2; > > double avg = 9.61; > > double stddev = 2.57; > > > > chart1.AxisY.Min = -6.95; > > chart1.AxisY.Max = 14.09; > > > > chart1.AxisX.Line.Style = System.Drawing.Drawing2D.DashStyle.Dash; > > > > double[] steps = new double[4]; > > int n = 0; > > steps[n++] = avg - stddev - chart1.AxisY.Min; > > steps[n++] = stddev; > > steps[n++] = stddev; > > steps[n++] = chart1.AxisY.Max - avg - stddev; > > for (int i = 0; i < series; i++) > > { > > int count = 2; > > double val; > > if (i == 0) > > val = avg - stddev; > > else if (i == 1) > > val = avg; > > else > > val = avg + stddev; > > > > for (int k = 0; k < count; k += 1) > > { > > chart1.Value[i, k] = val; > > chart1.XValue[i, k] = k; > > } > > } > > > > chart1.AxisY.CustomSteps = steps; > > chart1.CloseData(COD.XValues); > > chart1.CloseData(COD.Values); > > "Ming Goi" <mgoi@angoss.com> wrote in message > > news:ikW1EurqFHA.1992@webserver3.softwarefx.com... > > > >>I think, I found a way to do this. > >>I use the CustemSteps property, the label shows exactly where i want it to > >>be.... > >>Thanks for your response. > >> > >>"Holger Wilken" <holger.wilken@megatel.de> wrote in message > >>news:wlxzWpkqFHA.1724@webserver3.softwarefx.com... > >> > >>>(this answer appeared in a different thread, but belongs here, I think): > >>> > >>>Ok. The problem is you are adding a String label with the line: > >>> > >>>chart1.YLeg.Add(val.ToString()); > >>> > >>>Nowhere you are specifying where this label should go. > >>> > >>>The way String labels work in a numeric axis is through the LabelValue > >>>property, this property makes the equivalence between the index of the > >> > >>label > >> > >>>(0 in this case) and the logical value in the axis, these labels are > >> > >>evenly > >> > >>>spaced. > >>> > >>>If you want to label an arbitrary value, completely independent of > > > > Min/Max > > > >>>and other Axis labels, the best option for you is a Constant Line. > >>> > >>>The following code adds a constant line displaying a label for the value > >>>2.37: > >>> > >>>ConstantLine cl = new ConstantLine(); > >>> > >>>cl.Value = val; > >>> > >>>cl.Text = val.ToString(); > >>> > >>>cl.Flags |= ConstantFlag.HideLine | ConstantFlag.OutsideText; > >>> > >>>chart1.ConstantLines.Add(cl); > >>> > >>>Use this code INSTEAD of the YLeg code. Note that there is no guarantee > >>>that this label won't overlap another axis labels. If this is the ONLY > >> > >>label > >> > >>>you want in your axis, you may hide the regular axis labels by doing: > >>> > >>>chart1.AxisY.Style |= AxisStyle.HideText; > >>> > >>>-- > >>>Francisco Padron > >>>www.chartfx.com > >>> > >>> > >>> > >>> > >> > >> > > > > Link to comment Share on other sites More sharing options...
Software FX Posted September 2, 2005 Report Share Posted September 2, 2005 When negative and positive numbers are involved CustomSteps works this way: Use Step array going up (from 0 to Max) until Max is reached, then continue using the array going down (from 0 to Min). In your case, the first step is 13.99 used to go from 0 to 13.99, then it uses 2.57 but the Max is exceeded, so it goes to zero and uses 2.57 (2nd in the array) then 2.57 (3rd in the array) and then 1.91 (4th in the array). If you want to go straight from Min to Max without breaking at zero do: chart1.AxisY.Style &= ~AxisStyle.BreakZero; Whit this, you will get the following labels: 6.95, 7.04, 9.61, 12.18, 14.09 -- Francisco Padron www.chartfx.com Link to comment Share on other sites More sharing options...
User (Legacy) Posted September 2, 2005 Author Report Share Posted September 2, 2005 Thanks for your reply. As it turned out, all I need is > chart1.AxisY.Style &= ~AxisStyle.BreakZero; then everything works as expected. Thanks again. "SoftwareFX Support" <noreply@softwarefx.com> wrote in message news:1F8%23%23L9rFHA.1720@webserver3.softwarefx.com... > When negative and positive numbers are involved CustomSteps works this way: > > Use Step array going up (from 0 to Max) until Max is reached, then continue > using the array going down (from 0 to Min). > > In your case, the first step is 13.99 used to go from 0 to 13.99, then it > uses 2.57 but the Max is exceeded, so it goes to zero and uses 2.57 (2nd in > the array) then 2.57 (3rd in the array) and then 1.91 (4th in the array). > > If you want to go straight from Min to Max without breaking at zero do: > > chart1.AxisY.Style &= ~AxisStyle.BreakZero; > > Whit this, you will get the following labels: > > 6.95, 7.04, 9.61, 12.18, 14.09 > > -- > Francisco Padron > www.chartfx.com > > Link to comment Share on other sites More sharing options...
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