# How to get y value?

4 vues (au cours des 30 derniers jours)
Minhee le 13 Fév 2024
Commenté : Walter Roberson le 13 Fév 2024
How can I get Y value when X=900?
Also, how to edit decimal point? I would like to present like 25.49
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### Réponses (2)

Walter Roberson le 13 Fév 2024
Xtarget = 900;
H = findobj('type', 'line');
xvals = arrayfun(@(h) h.XData, H, 'uniform', 0);
yvals = arrayfun(@(h) h.YData, H, 'uniform', 0);
yinterp = cellfun(@(X,Y) interp1(X, Y, Xtarget), xvals, yvals);
yinterp(isnan(yinterp)) = [];
Now yinterp will be the set of Y values for all of the lines, skipping any line for which it does not make sense for there to be an X = 900.
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Minhee le 13 Fév 2024
Thank you!
But can I present on the graph?
Walter Roberson le 13 Fév 2024
num_simulations = 10000;
%Common parameters
Discount_Rate_min = 0.06; % assume 6-8%
Discount_Rate_max = 0.08;
Discount_Rate_values = unifrnd(Discount_Rate_min, Discount_Rate_max, [num_simulations, 1]);
Electricity_Cost_values_W = 0.006; %EUR/kWh
Electricity_Cost_values_P = 0.007; %EUR/kWh
FLH_W = [0:3066];
FLH_P = [0:876];
LHV = 33.33; %kWh/kgH2
%SOEC parameters
CAPEX_System_SOEC_mean = 4200; %\$/kW
CAPEX_System_SOEC_std = 1142.7;
CAPEX_System_SOEC_values = normrnd(CAPEX_System_SOEC_mean, CAPEX_System_SOEC_std, [num_simulations,1]);
CAPEX_System_SOEC_values(CAPEX_System_SOEC_values < 2800) = 2800;
CAPEX_System_SOEC_values(CAPEX_System_SOEC_values > 5600) = 5600;
%CAPEX_Stack_SOEC_values = 0.5*CAPEX_System_SOEC_values; % 50% of CAPEX system
CAPEX_SOEC_values = CAPEX_System_SOEC_values;
OPEX_SOEC_values = 3; % 3% of CAPEX/a
System_Efficiency_SOEC_mean = 0.775;
System_Efficiency_SOEC_std = 0.0408;
System_Efficiency_SOEC_values = normrnd(System_Efficiency_SOEC_mean, System_Efficiency_SOEC_std, [num_simulations,1]);
System_Efficiency_SOEC_values(System_Efficiency_SOEC_values < 0.74) = 0.74;
System_Efficiency_SOEC_values(System_Efficiency_SOEC_values > 0.81) = 0.81;
%PEM parameters
CAPEX_System_PEM_mean = 1450; %\$/kW
CAPEX_System_PEM_std = 367.42;
CAPEX_System_PEM_values = normrnd(CAPEX_System_PEM_mean, CAPEX_System_PEM_std, [num_simulations,1]);
CAPEX_System_PEM_values(CAPEX_System_PEM_values < 1100) = 1100;
CAPEX_System_PEM_values(CAPEX_System_PEM_values > 1800) = 1800;
%CAPEX_Stack_PEM_values = 0.35*CAPEX_System_PEM_values; % 35% of CAPEX system
CAPEX_PEM_values = CAPEX_System_PEM_values;
OPEX_PEM_values = 3;
System_Efficiency_PEM_mean = 0.58;
System_Efficiency_PEM_std = 0.0163;
System_Efficiency_PEM_values = normrnd(System_Efficiency_PEM_mean, System_Efficiency_PEM_std, [num_simulations,1]);
System_Efficiency_PEM_values(System_Efficiency_PEM_values < 0.56) = 0.56;
System_Efficiency_PEM_values(System_Efficiency_PEM_values > 0.6) = 0.6;
%AEC parameters
CAPEX_System_AEC_mean = 950; % \$/kW
CAPEX_System_AEC_std = 387.3;
CAPEX_System_AEC_values = normrnd(CAPEX_System_AEC_mean, CAPEX_System_AEC_std, [num_simulations,1]);
CAPEX_System_AEC_values(CAPEX_System_AEC_values < 500) = 500;
CAPEX_System_AEC_values(CAPEX_System_AEC_values > 1400) = 1400;
%CAPEX_Stack_AEC_values = 0.35*CAPEX_System_AEC_values; % 35% of CAPEX system
CAPEX_AEC_values = CAPEX_System_AEC_values;
OPEX_AEC_values = 3;
System_Efficiency_AEC_mean = 0.665;
System_Efficiency_AEC_std = 0.0271;
System_Efficiency_AEC_values = normrnd(System_Efficiency_AEC_mean, System_Efficiency_AEC_std, [num_simulations,1]);
System_Efficiency_AEC_values(System_Efficiency_AEC_values < 0.63) = 0.63;
System_Efficiency_AEC_values(System_Efficiency_AEC_values > 0.7) = 0.7;
% Calculate SOEC LCOH values
term1_S = LHV ./ System_Efficiency_SOEC_values;
term2_S = Discount_Rate_values .* (1 + Discount_Rate_values).^Lifetime;
term3_S = (OPEX_SOEC_values / 100);
term4_W = CAPEX_SOEC_values ./ FLH_W;
term4_P = CAPEX_SOEC_values ./ FLH_P;
LCOH_SOEC_W = term1_S .* ((term2_S ./ ((1 + Discount_Rate_values).^Lifetime - 1) + term3_S) .* term4_W + Electricity_Cost_values_W);
LCOH_SOEC_P = term1_S .* ((term2_S ./ ((1 + Discount_Rate_values).^Lifetime - 1) + term3_S) .* term4_P + Electricity_Cost_values_P);
% Calculate PEM LCOH values
term1_P = LHV ./ System_Efficiency_PEM_values;
term2_P = Discount_Rate_values .* (1 + Discount_Rate_values).^Lifetime;
term3_P = (OPEX_PEM_values / 100);
term4_W = CAPEX_PEM_values ./ FLH_W;
term4_P = CAPEX_PEM_values ./ FLH_P;
LCOH_PEM_W = term1_P .* ((term2_P ./ ((1 + Discount_Rate_values).^Lifetime - 1) + term3_P) .* term4_W + Electricity_Cost_values_W);
LCOH_PEM_P = term1_P .* ((term2_P ./ ((1 + Discount_Rate_values).^Lifetime - 1) + term3_P) .* term4_P + Electricity_Cost_values_P);
% Calculate AEC LCOH values
term1_A = LHV ./ System_Efficiency_AEC_values;
term2_A = Discount_Rate_values .* (1 + Discount_Rate_values).^Lifetime;
term3_A = (OPEX_AEC_values / 100);
term4_W = CAPEX_AEC_values ./ FLH_W;
term4_P = CAPEX_AEC_values ./ FLH_P;
LCOH_AEC_W = term1_A .* ((term2_A ./ ((1 + Discount_Rate_values).^Lifetime - 1) + term3_A) .* term4_W + Electricity_Cost_values_W);
LCOH_AEC_P = term1_A .* ((term2_A ./ ((1 + Discount_Rate_values).^Lifetime - 1) + term3_A) .* term4_P + Electricity_Cost_values_P);
avg_SOEC_W = mean(LCOH_SOEC_W);
avg_SOEC_P = mean(LCOH_SOEC_P);
avg_PEM_W = mean(LCOH_PEM_W);
avg_PEM_P = mean(LCOH_PEM_P);
avg_AEC_W = mean(LCOH_AEC_W);
avg_AEC_P = mean(LCOH_AEC_P);
% Plotting LCOH for each country based on FLH
figure;
hold on;
plot(FLH_W, avg_SOEC_W, 'DisplayName', 'SOEC W', 'LineWidth', 2, 'Color', [1, 0.3, 0.8, 0.5]);
plot(FLH_P, avg_SOEC_P, '--', 'DisplayName', 'SOEC P', 'LineWidth', 2, 'Color', 'r');
plot(FLH_W, avg_PEM_W, 'DisplayName', 'PEM W', 'LineWidth', 2, 'Color', 'c');
plot(FLH_P, avg_PEM_P, '--', 'DisplayName', 'PEM P', 'LineWidth', 2, 'Color', 'b');
plot(FLH_W, avg_AEC_W, 'DisplayName', 'AEC W', 'LineWidth', 2, 'Color', [0.3,0.8,0]);
plot(FLH_P, avg_AEC_P, '--', 'DisplayName', 'AEC P', 'LineWidth', 2, 'Color', 'g');
hold off;
% Set axis labels and legend
ylabel('LCOH [€/kgH2]');
title('Scenario 1 2020');
legend('Location', 'Best');
grid on;
xlim([0 8760]);
ylim([0 30]);
Xtarget = 900;
H = findobj('type', 'line');
xvals = arrayfun(@(h) h.XData, H, 'uniform', 0);
yvals = arrayfun(@(h) h.YData, H, 'uniform', 0);
yinterp = cellfun(@(X,Y) interp1(X, Y, Xtarget), xvals, yvals);
text(repmat(Xtarget, length(H), 1), yinterp(:), compose("%.2f", yinterp(:)));

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Image Analyst le 13 Fév 2024
Try this:
Xtarget = 900; % or 3000
yinterp = interp1(FLH_W, avg_SOEC_W, Xtarget)
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